Bottender

Declarative framework for building cross-channel conversational experiences

bpftrace

Powerful, scriptable eBPF tracing for Linux with awk-like syntax

Briefer

Collaborative notebooks and dashboards powered by Python, SQL, AI.

Briefkasten

Self-hosted bookmark manager with full-text search and OAuth

BrowserOS

AI‑powered Chromium browser that runs agents locally, privacy‑first

Browser Use

LLM-driven, stealth-enabled browser automation with cloud scaling

Bruno

Local‑first API client that stores collections as plain files

Btw

Open source personal website builder for instant blogging

Bucketeer

Feature flag management and A/B testing platform

Budibase

Low-code platform for building internal tools and workflows

Bugsink

Self-hosted error tracking compatible with Sentry SDK

Builder.io

Visual development platform turning designs into production code

buku

Powerful command-line bookmark manager with private, portable database

BunkerWeb

Secure your web services by default with a flexible WAF

ByConity

Cloud-native data warehouse with compute-storage separation for large-scale analytics

ByteChef

Open-source low-code platform for API integration and workflow automation

Bytedesk

AI‑powered omnichannel chat platform for teams and support

Cachet

Self-hosted status page system for service monitoring

Caddy WAF

Advanced, customizable WAF middleware for Caddy web server

Cal.com

Open-source scheduling infrastructure you control and customize

Calico

Scalable, high-performance networking and security for cloud-native workloads

Canine

Kubernetes deployment platform with Heroku-like simplicity

Canvas LMS

Modern open-source learning management system by Instructure

Cap

Open source video messaging with instant screen recording