Best open source tools

Keep technical team communication on infrastructure the organization controls.

Open-source interface design with CSS-based layouts

Write programmable configuration with validation and generate JSON, YAML, and other output formats.

A commerce engine with structured products and channel-specific delivery rules

A free, open-source engine and editor for creating 2D and 3D games across desktop, mobile, and web targets.

Annotate and style screenshots across desktop platforms.

Open-source tracing and production evaluation for LLM applications and agents.

An open-source checklist for the stages of a UX project

An open-source distributed NoSQL database built around partitioned rows.

A local Markdown editor for people who want rich text and source files in their own folders.

Realtime voice, video, and AI APIs for developers

A real-time visual collaboration canvas with voice chat, diagrams, and self-hosting options.

AI model from Moonshot AI for reasoning, coding, and agentic tasks.

AI agents that automate browser workflows on any website.

Run Jira-style work management, tests, time tracking, and integrations on your own infrastructure.

Plan portfolios, resources, quality, time, and costs in an adaptable project-management suite.

Free desktop finance software with statement imports and reconciliation

Continuously fuzz accepted open-source projects to find crashes and other input-handling bugs.

Compare allocations using volatility, downside losses and drawdown risk

One subscription for GPT 5, Claude, Gemini, DeepSeek and Qwen models

Run community and team chat on your own server with MIT-licensed software.

Open source platform for building multi-task AI agents without code

A desktop note environment for Markdown, source files, mind maps, PDFs, and other formats.

Inject controlled faults into Kubernetes workloads to test recovery and resilience.