Top 11 Acid Open-Source Projects

foundationdb

21 13,971 9.8 C++

FoundationDB - the open source, distributed, transactional key-value store

Project mention: Figma's Databases team lived to tell the scale | news.ycombinator.com | 2024-03-14

Actually, Apple does this for iCloud! They use FoundationDB[1] to store billions of databases, one for each user (plus shared or global databases).
See: https://read.engineerscodex.com/p/how-apple-built-icloud-to-...
Discussed on HN at the time: https://news.ycombinator.com/item?id=39028672
[1]: https://github.com/apple/foundationdb https://en.wikipedia.org/wiki/FoundationDB

delta

69 6,897 9.8 Scala

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs (by delta-io)

Project mention: Delta Lake vs. Parquet: A Comparison | news.ycombinator.com | 2024-01-19

Delta is pretty great, let's you do upserts into tables in DataBricks much easier than without it.
I think the website is here: https://delta.io

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
terminusdb

51 2,632 8.9 Prolog

TerminusDB is a distributed database with a collaboration model

Project mention: Ask HN: What is new in Algorithms / Data Structures these days? | news.ycombinator.com | 2023-05-10

How about some succinct data structures and delta encoding for modern databases [1]. Succinct data structures are a family of data structures which are close in size to the information theoretic minimum representation (while still being queryable).
[1] https://github.com/terminusdb/terminusdb/blob/dev/docs/white...

cubdb

4 512 1.2 Elixir

Elixir embedded key/value database
DBreeze

1 505 8.8 C#

C# .NET NOSQL ( key value store embedded ) ACID multi-paradigm database management system.
ustore

15 486 9.6 C++

Multi-Modal Database replacing MongoDB, Neo4J, and Elastic with 1 faster ACID solution, with NetworkX and Pandas interfaces, and bindings for C 99, C++ 17, Python 3, Java, GoLang 🗄️
acid-state

2 290 4.2 Haskell

Add ACID guarantees to any serializable Haskell data structure
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
DictDataBase

9 220 7.8 Python

A python NoSQL dictionary database, with concurrent access and ACID compliance
skipdb

1 27 8.4 Rust

An embedded, in-memory, zero-copy, ACID, MVCC, almost lock-free and serializable snapshot isolation database engine.

Project mention: Skipdb: Embedded, in-memory, zero-copy, ACID, serializable database engine | news.ycombinator.com | 2024-04-25

acid-banger

2 8 3.1 TypeScript

The Endless Acid Banger - Extra Spicy (by zykure)
acid-state-tls

0 2 0.0 Haskell

TLS support for remote AcidState connections

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).