Bt GitHub Repositories (2026) · Open Source Tools

sbt, the interactive build tool

Firebase Android SDK

🔥🔥🔥 Open source Reverse ETL - alternative to hightouch and census.

Open-source ETL/ELT you deploy on your own servers or cloud. Built on DuckDB: no-code/low-code visual pipelines or SQL, 385 components, dbt, CDC, data quality, reverse ETL, lineage, MCP for AI agents. No vendor cloud, no per-row billing.

dbt adapter for SQL Server and Azure SQL

A SQL transformation engine that type-checks your whole pipeline and catches breaking changes before they run — branches, replay, column-level lineage, compile-time contracts, per-model cost. Adapters: Databricks, Snowflake, BigQuery, DuckDB. Single static Rust binary. Apache 2.0.

Your Music, Your Rhythm. An open-source, privacy-first Android music player featuring a beautiful Material 3 Expressive UI. Built entirely in Kotlin.

Python parser for SubRip (srt) files

Discriminated Json Subtypes Converter implementation for .NET

Convenient access to tick-level real-time and historical cryptocurrency market data via Node.js

Locally runnable server with built-in data caching, providing both tick-level historical and consolidated real-time cryptocurrency market data via HTTP and WebSocket APIs

Jumping forward ~30 years

Deploy, execute, manage process-based applications made with Bonita studio or through Engine APIs

Comprehensive Bitcoin development library for Android, implemented on Kotlin. SPV wallet implementation for Bitcoin, Bitcoin Cash, Litecoin and Dash blockchains. Fully compliant with existing standards and BIPs.

Open-source local AI video analyzer powered by Ollama. Visual search, automatic highlights, scene/action/object detection, audio analysis, and subtitle generation. Free, offline alternative to Twelve Labs, Runway, and Descript.

Text based kanban processor

The coordination, measurement, and quality layer that subgen never had. A peer service for the *arr family that adds calibrated audio-language detection, provider success leaderboards, and (v1.1) an in-app Whisper tuning lab.

Ad-free Android media player powered by MPV and Media3.

collects test and archives Tor bridges from the official Tor Project

Java bindings for various native APIs