All SaaS

BigBlueButton

bigbluebutton.org

Open source

Supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen. Instructors can engage remote students with polling, emojis, and breakout rooms.

bitmagnet

bitmagnet.io

Open source

BitTorrent indexer, DHT crawler, content classifier and torrent search engine with web UI, GraphQL API and Servarr stack integration.

bitnet.cpp

github.com

Open source

Official inference framework for 1-bit LLMs, by Microsoft.

bittorrent-tracker

webtorrent.io

Open source

Simple, robust, BitTorrent tracker (client and server) implementation.

Bitwarden

bitwarden.com

Open source

Open-source alternative to 1Password.

Black Candy

github.com

Open source

Music streaming server.

blocky

0xerr0r.github.io

Open source

Fast and lightweight DNS proxy as ad-blocker for local network with many features (alternative to Pi-hole).

Bloom

huggingface.co

Open source

BLOOM by Hugging Face is a model similar to GPT-3 that has been trained on 46 different languages and 13 programming languages.

Bludit

bludit.com

Open source

- Build a site or blog in seconds. Bludit uses flat-files (text files in JSON format) to store posts and pages.

Bolt CMS

boltcms.io

Open source

Content Management Tool, which strives to be as simple and straightforward as possible.

BookBounty

github.com

Open source

- Retrieve missing Readarr books from Library Genesis.

BookLogr

github.com

Open source

Manage your personal book library with ease.

Bootstrap

icons.getbootstrap.com

Open source

Open-source alternative to Noun Project.

BotWave

botwave.dpip.lol

Open source

FM broadcasting system with server-client architecture for managing multiple Raspberry Pi transmitters remotely.

btw

btw.so

Open source

Open-source alternative to Medium.

Bubo Reader

github.com

Open source

Irrationally minimal RSS feed reader.

BuddyPress

buddypress.org

Open source

Powerful plugin that takes your WordPress.org powered site beyond the blog with social-network features like user profiles, activity streams, user groups, and more.

Budibase

budibase.com

Open source

Open-source alternative to Retool.

Bugzilla

bugzilla.org

Open source

Open-source alternative to Sentry.

Buku

github.com

Open source

Powerful bookmark manager and a personal textual mini-web.

Bytebase

bytebase.com

Open source

Safe database schema change and version control for DevOps teams, supports MySQL, PostgreSQL, TiDB, ClickHouse, and Snowflake.

Cal.com

cal.com

Open source

Open-source alternative to Calendly.

Cal.diy

cal.diy

Open source

Online appointment scheduling system.

Calibre

calibre-ebook.com

Open source

E-book library manager that can view, convert, and catalog e-books in most of the major e-book formats and provides a built-in Web server for remote clients.