Estimators, planners, and site teams work from one project record in OpenConstructionERP, a self-hosted construction workspace that carries a job from priced bill of quantities through tender, schedule, and site diary. The BOQ editor organizes sections, positions, and reusable assemblies with overhead, profit, VAT, and contingency markups, validates against DIN 276, NRM, and MasterFormat, and exports to PDF, Excel, CSV, or GAEB XML. Pricing draws on 120,000+ cost items across nine cost bases and a 7,000+ resource catalog, with regional price adjustment and semantic search. Quantities come from PDF plans measured on screen or from RVT, IFC, DWG, and DGN models; a 3D viewer filters elements and links them to BOQ positions, clash detection checks federated models, and an AI estimator drafts positions from text, photos, or drawings via the LLM you connect. Gantt schedules show dependencies and critical path, while earned value and S-curves track budget against actual. Tender comparison lines up subcontractor bids, and contracts, variations, and interim payment claims stay tied to the contract sum. On site, daily diaries with health and safety tracking, punch lists, and a carbon module totaling embodied emissions from the BOQ keep field work in the same system. The interface speaks 44 languages with right-to-left support, 293 guided cases teach real workflows on a demo project, and a REST API, webhooks, and module builder extend it. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

From a PDF plan set to a waste-adjusted material order takes one browser tab: OpenTakeoff measures floors, walls, and fixtures at the drawn scale and never uploads a single drawing. Drag in a PDF, image, or zip plan set, view up to four sheets side by side, and search sheet text, while stitching joins floors split across a match line. Scale comes from the drawn scale note or a known dimension, and a check tool reports percent error before a wrong scale can skew a bid. Area, linear, and count tools carry condition colors, CAD hatches, waste percentages, and wall heights, and a marquee over the architect's finish schedule turns approved rows into conditions. Supporting materials convert coverage rates into rounded-up order quantities, and roll-goods mode lays out lanes, seams, and cuts to scale. Totals in SF, SY, LF, and EA export to CSV, JSON, Excel, print, or a marked-set PDF, while named revisions compare addenda as quantity deltas. Highlighters, revision clouds, callouts, and notes mark up sheets on a layer that is never counted, and dimension lines label measured lengths at the sheet scale. An MCP server with more than 50 tools lets AI agents open plans, set scale, and measure rooms, and each shape they draw stays a dashed proposal until a person accepts it. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

House Planner holds the design of your house in one browser workspace, from true-scale floor plans drawn over a satellite photo of your plot to costed wiring, plumbing, sewer, and heating layouts. Draw walls at true scale in millimetres with thickness and materials, add doors, windows, garage gates, and furniture with true dimensions, and watch room areas and plot coverage total as you work. Flip into 3D for a massing model or the house finished with material textures and facade colours, with cut-down walls for reading the layout from above. Every utility network gets an engineering layer: route sewer lines to a septic tank with slopes and cleanouts, auto-route electrical circuits with breaker and voltage-drop checks, and run water piping from well and boiler to each fixture. Underfloor heating loops lay out room by room, split before 80 metres, and balance flow against heat loss. The bill of materials computes quantities from the plan and networks, producing a priced estimate you can print, tick off as you buy, or export to CSV. Every save is a numbered version with restorable snapshots, tabs cannot overwrite each other, and the JSON plan can be edited by an AI assistant through the same API. One password guards the project, phones get a read-only view for on-site checks, and the whole thing runs in one Docker container with no database. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Your task list should outlive the app that displays it: Tasks.md turns a folder of plain Markdown files into a kanban board, so the board is a view of your notes rather than a database holding them hostage. Every lane you create becomes a directory and every card a Markdown file inside it, which means the whole board stays readable in any text editor, greppable from a terminal, and friendly to the note tools you already use. You write card bodies in a proper Markdown editor, organize work with tags and due dates, and drag cards between lanes as priorities change. Sub-folders open as their own projects with separate lanes, so one installation quietly serves a work board, a home board, and a writing board side by side. Light and dark themes follow your operating system, three bundled color schemes (Adwaita, Nord, and Catppuccin) set the mood, and a custom stylesheet hook recolors everything else. The board installs as a PWA for an app-like window, speaks multiple languages detected from the browser, and slots under a subpath reverse proxy when it shares a domain. One Docker container on port 8080 serves the whole thing. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Windshift packs boards, sprints, roadmaps, test runs, time tracking, and a customer portal into one open-source tracker that replaces Jira on a server you control. Epics, stories, and sub-tasks form a hierarchy you can view as a board, list, tree, or map, and backlog items drag into dated sprints. The roadmap stretches across weeks, months, or quarters, and milestone pages show completion percentage with a status breakdown. Each workspace defines its own item types, custom fields, screens, statuses, priorities, workflows with conditions and approvals, and permissions, while JQL-style queries save as shared views. Event-driven rules update fields, notify people, and create work. Customers file requests through a public portal, and your team works them through queues with SLAs and approvals. Reusable test cases roll into test runs with success rates, and timers log billable and internal hours against projects and customers. GitHub, GitLab, Gitea, and Forgejo connections put branches and pull requests on the work item, and the importer brings over Jira projects, comments, attachments, and worklogs. A knowledge base and an asset register keep documentation and inventory next to the work. The interface speaks nine languages, including right-to-left Arabic, and sign-in supports OIDC single sign-on and passkeys. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Winner of the 2015 Most Valued Agile Tool award and cited as a top project management platform by Opensource.com with over 2,100 GitHub stars on the Docker deployment repository alone, Taiga has served an estimated 20 million users worldwide with over 2 million Docker pulls since its creation in 2014 by Kaleidos. The platform delivers a complete agile project management experience through Scrum boards with backlog prioritization, sprint planning, story point estimation configurable per role, burndown charts at both project and sprint levels, and velocity tracking with a project doom-line indicator. Kanban boards offer customizable workflow columns with swimlanes, WIP limits, zoom controls, and the ability to switch between Scrum and Kanban at any point without losing data. The issue tracker supports custom types, priorities, and severities with the ability to promote issues directly to user stories. Team collaboration features include threaded comments, file attachments, email notifications, mentions, a built-in wiki for project documentation, and a team performance dashboard with the Iocane health metric for tracking team sustainability. The platform integrates with GitHub, GitLab, and Bitbucket for version control linking, provides importers for migrating from Trello and Jira, and exposes a REST API for custom integrations. Available in over 20 languages with custom fields, tags, roles, and permissions. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MPL-2.0 licensed.

Nearly two decades running engineering organizations: Redmine is the veteran open-source project management and issue tracker, a Ruby on Rails application (GPLv2) still in active development. Its core strength is configurability: define your own trackers (bug, feature, task, or anything else), issue statuses, and role-based workflows that control exactly which transitions each role may perform, then extend records with custom fields of every type. Issues support subtasks, relations (blocks, precedes, duplicates), watchers, categories, and full journaled history, with saved custom queries and cross-project filtering for slicing the backlog any way you need. Around the tracker sit Gantt charts and calendars, a roadmap driven by versions, per-project wikis, forums, news, and document repositories, plus time tracking with estimated versus spent hours and activity-based reporting. Multi-project support runs deep - subprojects, per-project modules, and granular role-based permissions - and repository integration (Git, Subversion, Mercurial) links commits to issues automatically. Email notifications, inbound email-to-issue creation, LDAP authentication, a REST API, and a large plugin and theme ecosystem round it out. Recent 6.x releases brought substantial query and rendering optimizations. Self-hosting keeps your entire project history in your own database, free of per-seat licensing.

"As simple as Trello but as feature-rich as Jira" is how the Leantime team frames its goals-focused project management system for non-project managers - built from the ground up with ADHD, autism, and dyslexia in mind, with behavioral science shaping customizable dashboards, time blocking, low-cognitive-load prioritization, and Kanban, list, table, Gantt, and calendar views so each person works the way their brain does. The PHP application (AGPL, Laravel Blade frontend) connects strategy to execution: tasks with unlimited subtasks and dependencies roll up into milestones on a timeline, sprints and retrospectives handle iteration, and strategy-level blueprint boards - Lean Canvas, SWOT, risk analysis, goal and metric tracking - keep the "why" attached to the work. Knowledge lives alongside: wikis and docs, idea boards, comments on everything, file storage on S3 or local disk, even screen and webcam recording. Time tracking with timesheets supports estimation and client billing. Admin features are serious for an OSS tool: per-project permissions, two-factor auth, LDAP and OIDC single sign-on, Slack, Mattermost, and Discord integrations, a plugin system, and an expanding API that now powers a mobile app. Recent releases added multi-collaborator task assignment and low-vision accessibility improvements. Available in 20+ languages.

draw.io is a free, browser-based diagramming editor for flowcharts, network maps, UML models, and org charts, with nothing to install. An infinite canvas takes shapes from extensive libraries, connectors reroute automatically as shapes move, and ready-made templates replace the blank page. Tables, swimlanes, layers, and tags keep large diagrams tidy, and shape metadata and placeholders attach tooltips, links, and translations. Auto-layout straightens flowcharts and trees. Math typesetting, a simple whiteboard layout, and adaptive dark mode are built in, and custom shape libraries carry your own in-house icon sets. Export to PNG, JPEG, WebP, SVG, HTML, or PDF, embed the diagram data inside PNG and SVG files so they stay editable, or save the full diagram as a .drawio file. Your server stores no diagrams: files go to the user's device, the browser, or Google Drive, OneDrive, and GitLab once you register your own OAuth app. Optional AI diagram generation uses your own provider key, and environment variables set the interface language, fonts, and security policy. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Half the architecture sketches on the internet trace back to Excalidraw - the MIT-licensed virtual whiteboard whose hand-drawn aesthetic made technical diagramming feel approachable, at roughly 85,000 GitHub stars. The infinite canvas offers rectangles, ellipses, diamonds, arrows with smart binding and labels, free-draw, text, images, and an eraser, with full undo/redo, zoom, dark mode, and keyboard-first ergonomics. Community shape libraries add thousands of pre-built elements - AWS architecture icons, flowchart stencils, UI wireframe kits - and everything exports to PNG, SVG, the clipboard, or the open .excalidraw JSON format that keeps drawings diffable and portable. Live collaboration works on a share-a-link model with live cursors and a laser pointer for presenting, and it is end-to-end encrypted by design: the room key travels in the URL hash, which never reaches the server, so the WebSocket relay only ever sees ciphertext. The architecture is remarkably light - the app is a static bundle served by Nginx, drawings persist locally in the browser, and the stateless excalidraw-room relay handles multiplayer - so a self-hosted deployment gives unlimited boards and collaborators with near-zero resource cost, replacing per-editor whiteboard subscriptions.

Convert paper archives, email attachments, and PDF records into an organized digital repository with Docspell, an open-source document management system that automates optical character recognition, metadata extraction, and full-text search. Users can ingest receipts and invoices through network scanners, monitored IMAP email mailboxes, mobile uploads, or drag-and-drop browser tools. The background processing pipeline executes optical character recognition via Tesseract, enhances image contrast with unpaper, and extracts text from Word documents and PDFs. Machine learning algorithms analyze document syntax to predict correspondents, suggest relevant organization tags, and identify due dates automatically. Team members can search their entire filing cabinet using complex Boolean queries and full-text indexing powered by Apache Solr or PostgreSQL. Administrators can configure multi-user collectives with isolated permissions, define custom metadata attributes, set up webhooks, and share time-limited document download links. Users can also merge multi-page scans, track processing job queues, and export curated document collections for tax filings or legal audits. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GNU AGPL v3.0 licensed.

LogicalDOC is a document management system that gives a company one controlled home for its files instead of letting contracts, invoices, and procedures scatter across drives and inboxes. Staff store any kind of document in a repository organized on multiple levels, then find it again through advanced search that reaches inside document content, not just filenames. Colleagues collaborate on the same documents and projects while version control keeps the history straight, so nobody works from last quarter's draft by accident. Administrators define roles for different users, set access control and user quotas, and choose the security level for each area, with detailed activity logs showing who opened, changed, or shared what. Automations handle the routine flow of documents through the business, and the web services API lets an ERP or other systems integrate document management into existing processes. Information can be collected from any digital source, knowledge gets reused instead of recreated, and mobile apps for phones and tablets keep the repository reachable away from the desk. The official Docker image and Tomcat bundles make the Community Edition straightforward to run on your own infrastructure. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. LGPL-3.0 licensed.

Signature PDF turns the print, sign, scan, email routine into a browser tab: upload a contract, place your signature on the page, and send the finished document back without paper ever entering the loop. Sign alone in seconds, or share a link and let partners, clients, and colleagues add their signatures to the same document in turn. Draw your signature with the mouse or trackpad, type it in a handwriting style, or stamp a scanned image of your handwriting onto any page. Drop the signature exactly where it belongs, resize it, and apply it across selected pages before downloading the signed file. Organize mode lays every page out as thumbnails you can reorder, rotate, delete, extract, and merge with pages from other PDFs. The metadata editor rewrites title, author, and custom fields, and compression shrinks bulky scans to a size email can carry. For shared signing, PDFs rest on the server only for the retention window you choose, and optional storage encryption keeps their contents unreadable to anyone missing the key. Where cryptographic proof is required, certificate-backed digital signing proves who signed and exposes any later edit to the file. A built-in demo document lets anyone test the full flow first, and the translated interface serves signers in many languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Roughly 40 integrated business apps forming a full ERP: Odoo's open-source suite runs companies end to end. The Community Edition, licensed LGPL-3.0, ships roughly 40 apps covering CRM, sales, invoicing, basic accounting (journals, chart of accounts, taxes, reconciliation), inventory and warehouse management with multi-step routes, manufacturing with BOMs and work orders, purchasing, project management, timesheets, HR, a website builder, and eCommerce. Each app works standalone, but they share one PostgreSQL database and one data model, so a confirmed sale updates stock, triggers procurement, and posts invoices without integration glue. The modular design means you enable only the apps you need and extend with 40,000+ community modules from the Odoo app store covering nearly any vertical requirement. Inventory supports multi-warehouse stock, reordering rules, and lot and serial tracking with barcode-ready operations; manufacturing ties BOMs, work orders, and work-center routing directly to sales demand and stock levels; and the website builder sells straight from your product catalog with payment provider integrations. You can start with just CRM and invoicing on day one and switch on inventory or eCommerce later - new apps integrate with existing data instantly because the schema is shared. The server is Python with an XML/JavaScript view layer, and because data lives in plain PostgreSQL there is no proprietary format: you can query, back up, migrate, and extend business data directly, with unlimited users and no per-seat licensing - where enterprise ERP pricing is per user per month, headcount here costs nothing.

OpenBoxes is an open-source warehouse management system that keeps medication and supplies visible from central depot to clinic cabinet, so staff always know what is in stock, where it sits, and when it expires. The product catalog holds medications, medical devices, office supplies, and fixed assets, with suppliers, manufacturers, pricing, classifications, and custom attributes on every item. Inventory is tracked by facility and bin location down to lot and expiration date, and every adjustment, transfer, and removal leaves a full transaction history. Reorder points and stock alerts flag low stock, overstock, and expiring items before they become emergencies. Inbound, purchase orders, invoices, and budget codes manage procurement; goods receipt captures lots and expiry dates, and suggested putaway directs stock to the right bins. Outbound, requisitions and stock lists drive requests from upstream facilities, FEFO picking pulls the earliest-expiring lots first, and packing produces packing lists with customs documentation. Cycle counting keeps records honest without closing the warehouse, and dashboards surface stock value, fast movers, and expiring stock. Barcode scanners and a mobile-friendly interface speed up receiving and counting on the floor, and spreadsheet imports load products, locations, and opening stock in bulk. A REST API and webhooks connect OpenBoxes to ERPs, DHIS2 health information systems, and integration platforms like n8n and OpenFn, and location-restricted roles keep each facility on its own shelves. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. EPL-1.0 licensed.