A no-nonsense CAPTCHA system with seamless UX | Backend component.
- Anti-Spam Tool
- Free • Open Source
- Online
- Self-Hosted
- Software as a Service (SaaS)

A no-nonsense CAPTCHA system with seamless UX | Backend component.

ClickHouse is an open source column-oriented database management system capable of real time generation of analytical data reports using SQL queries.

Novu provides a unified API that makes it simple to send notifications through multiple channels, including In-App, Push, Email, SMS, and Chat. With Novu, you can create custom workflows and define conditions for each channel, ensuring that your notifications are delivered in...

Embeddings databases are a union of vector indexes (sparse and dense), graph networks and relational databases. This enables vector search with SQL, topic modeling, retrieval augmented generation and more.

Unslow finetuning for AI and LLMs. Get 30x faster with Unsloth.

Web-based interface for streaming platforms enabling ad-free playback, background audio, playlist management, subscriptions, custom themes, and real-time feed content.

Perplexica is an open-source AI-powered searching tool or an AI-powered search engine that goes deep into the internet to find answers. Inspired by Perplexity AI, it's an open-source option that not just searches the web but understands your questions.

A stream server that does most of what people really want from a social network.
Lychee is a free photo-management tool, which runs on your server or web-space. Installing is a matter of seconds. Upload, manage and share photos like from a native application. Lychee comes with everything you need and all your photos are stored securely.

REDbot is lint for HTTP resources. it tests protocol correctness, cacheability, content negotiation and more.


defguard is an SSO & VPN Server based on OpenID and WireGuard VPN with unique secure & private architecture for building secure and privacy-aware organizations.


Prisma unlocks a new level of developer experience when working with databases thanks to its intuitive data model, automated migrations, type-safety & auto-completion.
The open source personalized marketing platform. Bespoke's mission is to gather information about the customer and do personalized targetting. We gather customer data through various means, including API's, behavioral intent, surveys and integrations with platforms for...

Inboxkitten is an open-source disposable email service that you can freely deploy adopt on your own!

A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely. More friendly than other webirc clients giving the general public an easy option to connect to any IRC network.

AdonisJS is a Node.js web framework with a breath of fresh air and drizzle of elegant syntax on top of it. We prefer developer joy and stability over anything else.
wkhtmltopdf and wkhtmltoimage are open source (LGPLv3) command line tools to render HTML into PDF and various image formats using the Qt WebKit rendering engine.

AnonymousOverflow allows you to view StackOverflow threads without the cluttered interface and exposing your IP address, browsing habits and other browser fingerprint data to StackOverflow.

theHarvester is a very simple, yet effective tool designed to be used in the early stages of a penetration test. Use it for open source intelligence gathering and helping to determine a company's external threat landscape on the internet.
Euterpe is a music streaming software you can run yourself. It will give you access to your music everywhere you go. Either via its built-in web UI or via any of its clients. You could run it on your home computer, laptop or on a deticated server.

Apostrophe is a powerful website builder platform built on an enterprise open source CMS, offering in-context live editing, visual design tools, and multisite enablement in a full stack JS environment.
