Open-Source

Self-Hosting LanguageTool: Grammar Checker API with Docker Every writing tool wants to phone home. Grammarly reads everything you type. Google Docs analyzes your documents on their servers. Even browser extensions quietly ship your text to cloud APIs for grammar checking. If you write anything sensitive — legal documents, medical notes, proprietary code comments, personal journals — that’s a problem. LanguageTool is an open-source grammar, style, and spell checker that supports over 30 languages. It powers grammar checking in LibreOffice, and its commercial cloud service competes directly with Grammarly. But unlike Grammarly, you can run your own instance. Your text never leaves your network, you get unlimited checks with no word caps, and you can plug it into browser extensions, text editors, and custom applications via a clean REST API. ...

Self-Hosting Weblate: Continuous Localization Platform Localization is one of those things that’s easy to ignore until it blocks a release. You’ve got translators waiting on developers to export strings, developers waiting on translators to finish, and a spreadsheet somewhere that nobody trusts anymore. Meanwhile your French translation is three versions behind and the German one has 47 fuzzy entries nobody’s reviewed. Weblate is an open-source continuous localization platform that plugs directly into your Git workflow. Translators work in a web UI, changes get committed back to your repository automatically, and you can see translation status at a glance across every language. It’s used by over 2,500 projects including LibreOffice, phpMyAdmin, and Fedora — so it handles real scale. ...

Self-Hosting DocuSeal: Open Source Document Signing Platform If you’ve ever paid $25/month for DocuSign just to get a few contracts signed, you know the pain. DocuSeal is an open source alternative that handles document creation, filling, and signing — all self-hosted on your own server. No per-envelope fees, no subscription tiers, no sending your sensitive contracts through someone else’s infrastructure. It’s a Ruby on Rails app with a clean, mobile-optimized interface that works surprisingly well for something you can spin up in five minutes with Docker. ...

Self-Hosting LibreChat: Multi-AI Chat Interface for OpenAI, Claude & Local Models Paying for ChatGPT Plus, Claude Pro, and Gemini Advanced separately gets expensive fast — and you’re still locked into each provider’s individual interface. LibreChat gives you a single, self-hosted ChatGPT-style UI that connects to all of them at once: OpenAI, Anthropic, Google, local models through Ollama, and dozens more through OpenRouter and custom endpoints. It’s not just a chat wrapper. LibreChat includes conversation branching, file uploads, image generation, a code interpreter, RAG (retrieval-augmented generation) with your own documents, MCP tool support, multi-user auth, and an agent system that lets you build custom AI assistants — all from one interface you fully control. ...

Self-Hosting Penpot: Open Source Figma Alternative with Docker When Adobe acquired Figma for $20 billion in 2022 (later abandoned), it sent a clear message: your design tools are only as independent as the company behind them. Penpot exists so that message doesn’t have to matter. Penpot is a fully open-source design and prototyping platform licensed under MPL 2.0. It runs in the browser, supports real-time collaboration, outputs native SVG/CSS/HTML, and — crucially — can be self-hosted on your own infrastructure. No vendor lock-in, no per-seat pricing that scales into absurdity, no surprise acquisitions that change the terms overnight. ...

Self-Hosting Leantime: Open Source Project Management for Small Teams Most project management tools fall into two camps: either dead simple (Trello — a board and not much else) or enterprise-grade sprawl (Jira — where tickets go to die in a hierarchy of epics, stories, and sub-tasks nobody reads). If you’re running a small team, freelancing, or managing personal projects, neither extreme fits well. Leantime occupies the space between. It gives you kanban boards, Gantt charts, goal tracking, timesheets, wikis, and sprint management in a single self-hosted package. What makes it unusual is the design philosophy: built with ADHD, autism, and dyslexia in mind, it prioritizes reducing cognitive overload rather than adding more features behind more menus. ...