Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
Thunderbird for Android is a powerful, open-source email app that lets you manage multiple email accounts from a single interface with privacy as a core principle. Built on the proven foundation of K-9 Mail and supported by the Mozilla community, it delivers a feature-rich email experience without treating your data as a product.
Thunderbird for Android is ideal for users who prioritize privacy and open-source software, professionals managing multiple email accounts, and developers interested in contributing to community-driven mobile applications. It's suitable for anyone seeking a transparent alternative to mainstream email apps.
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
The Roundcube Webmail suite
An open-source platform for legally compliant email archiving.
Full-featured, open source mail server solution for mainstream Linux/BSD distributions.
CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies
Give your AI agent eyes to see the entire internet. Read & search Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu — one CLI, zero API fees.
🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.
🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.
General-purpose AI designed for knowledge workers — creators, strategists, and operators — and individuals seeking AI systems they can truly control to help them get work done, with full flexibility to extend and deploy anywhere (VPC, on-prem, or cloud).
:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.
🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integrates with OpenTelemetry, LangChain, OpenAI SDK, LiteLLM, and more. 🍊YC W23
Infisical is the open-source platform for secrets, certificates, and privileged access management.
🎧 Your Personal Streaming Service
A self hosted virtual browser that runs in docker and uses WebRTC.
