Dev tools · alternatives · 2026

24 alternatives to Apache ResilientDB, High-Performance Open-Source Blockchain

Hey Hacker News! We've been building Apache ResilientDB (incubating), a lightweight, modular, and high-performance open-source blockchain framework written in C++. Recently accepted into the Apache Incubator, ResilientDB is designed for flexibility, supporting various Byzantine Fault-Tolerant (BFT) and Crash Fault-Tolerant (CFT) consensus protocols, with native PBFT integration. With features like dynamic client-server architecture, robust checkpoint/recovery, and smart contract support, ResilientDB aims to push distributed ledger tech further. Check us out and join our community:…

Apache ResilientDB is an open-source blockchain framework written in C++ that provides a lightweight, modular platform for building distributed ledgers. It supports multiple consensus protocols including Byzantine… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 2 we have checked on their own sites, 2 of them free or with a free tier. Apache ResilientDB, High-Performance Open-Source Blockchain launched in 2024; newer entries below may have overtaken it.

1AT
A tool to seed your dev database with real data▲129
A bunch of developers and myself have created RepliByte - an open-source tool to seed a development database from a production database. Features: - Support data backup and restore for PostgreSQL, MySQL and MongoDB - Replace sensitive data with fake data - Works on large database (> 10GB) (read Design) - Database Subsetting: Scale down a production database to a more reasonable size - Start a local database with the prod data in a single command - On-the-fly data (de)compression (Zlib) - On-the-fly data de/encryption (AES-256) - Fully stateless (no server, no daemon) and lightweight…
2022 · its alternatives →
2DA
DriftDB – an open source WebSocket backend for real-time apps▲367
Hey HN! I’ve written a bunch of WebSocket servers over the years to do simple things like state synchronization, WebRTC signaling, and notifying a client when a backend job was run. I realized that if I had a simple way to create a private, temporary, mini-redis that the client could talk to directly, it would save a lot of time. So we created DriftDB. In addition to the open source server that you can run yourself, we also provide https://jamsocket.live where you can use an instance we host on Cloudflare’s edge (~13ms round trip latency from my home in NY). You may have seen my…
2023 · driftdb.com · its alternatives →
3
InstantDB – A Modern Firebase▲1,145
Hey there HN! We’re Joe and Stopa, and today we’re open sourcing InstantDB, a client-side database that makes it easy to build real-time and collaborative apps like Notion and Figma. Building modern apps these days involves a lot of schleps. For a basic CRUD app you need to spin up servers, wire up endpoints, integrate auth, add permissions, and then marshal data from the backend to the frontend and back again. If you want to deliver a buttery smooth user experience, you’ll need to add optimistic updates and rollbacks. We do these steps over and over for every feature we build, which can…
2024 · github.com · its alternatives →
4
Horizon 1.0▲312
Realtime, open-source backend for JavaScript apps
2016 · sequence.xyz · its alternatives →
5
A proof-of-concept FoundationDB based network block device backend▲192
A totally proof-of-concept FoundationDB based network block device backend - dividuum/fdb-nbd
2018 · github.com · its alternatives →
6
HelixDB – Open-source vector-graph database for AI applications (Rust)▲237
Hey HN, we want to share HelixDB (https://github.com/HelixDB/helix-db/), a project a college friend and I are working on. It’s a new database that natively intertwines graph and vector types, without sacrificing performance. It’s written in Rust and our initial focus is on supporting RAG. Here’s a video runthrough: https://screen.studio/share/szgQu3yq. Why a hybrid? Vector databases are useful for similarity queries, while graph databases are useful for relationship queries. Each stores data in a way that’s best for its main type of query (e.g.…
2025 · github.com · its alternatives →
7
QoreDB▲95
The fast, open-source database client built with Rust
Mar 2026 · qoredb.com · its alternatives →
8
HelixDB▲105
An open-source OLTP graph-vector database built in Rust.
Feb 2026 · helix-db.com · its alternatives →
9
InstantDB▲320
Complete backend with auth and storage in one prompt
Apr 2026 · instantdb.com · its alternatives →
10
DrawDB – open-source online database diagram editor (a retro)▲263
One year ago I open-sourced my very first 'real' project and shared it here. I was a college student in my senior year and desperately looking for a job. At the time of sharing it i couldn't even afford a domain and naively let someone buy the one i had my eyes on lol. It's been a hell of a year with this blowing up, me moving to another country, and switching 2 jobs. In a year we somehow managed to hit 26k stars, grow a 1000+ person discord community, and support 37 languages. I couldn't be more grateful for the community that helped this grow, but now i don't know what direction to take…
2025 · drawdb.app · its alternatives →
11
SereneDBfree▲262
Ultra-Fast Search & Analytics Database, Agentic AI ready
Sep 2026 · serenedb.com · its alternatives →
12
ZeroDB▲119
An open-source, end-to-end encrypted database protocol
2015 · zerodb.io · its alternatives →
13
IronDB – a resilient key-value store for the browser▲73
IronDB is now ImmortalDB: https://github.com/gruns/ImmortalDB - gruns/irondb
2018 · github.com · its alternatives →
14
A strongly-typed document DB that runs on any transactional KV store▲113
A strongly-typed document database that runs on any transactional key-value store. - losfair/RefineDB
2021 · github.com · its alternatives →
15
Ayder – HTTP-native durable event log written in C (curl as client)▲56
Hi HN, I built Ayder — a single-binary, HTTP-native durable event log written in C. The wedge is simple: curl is the client (no JVM, no ZooKeeper, no thick client libs). There’s a 2-minute demo that starts with an unclean SIGKILL, then restarts and verifies offsets + data are still there. Numbers (3-node Raft, real network, sync-majority writes, 64B payload): ~50K msg/s sustained (wrk2 @ 50K req/s), client P99 ~3.46ms. Crash recovery after SIGKILL is ~40–50s with ~8M offsets. Repo link has the video, benchmarks, and quick start. I’m looking for a few early design partners (any…
Jan 2026 · github.com · its alternatives →
16PD
PicoMQ – Durable Streams over HTTP, on object storagefree▲159
PicoMQ is a Rust server for Durable Streams, built on Object Store. Cheap, URL-addressable, granular streams (create/append/read/long-poll/SSE), with Pico Protocol or Durable Streams Protocol as the facade. S3Stream is the stream storage primitive, used in AutoMQ, shipped as a Rust library. Coordination is a command log in Postgres.
Aug 2026 · picomq.com · its alternatives →
17
ProvenDB▲67
Bridging the gap between databases and blockchains
2019 · its alternatives →
18
A dynamic C (Hot reloading) module-based Web Framework▲128
A modular web framework for C, inspired by kernel modules. Dynamically upload and compile C code at runtime to build REST APIs, WebSocket services, and more. Includes support for JSON (Jansson), SQLite, OpenSSL, and streaming large data efficiently. - joexbayer/c-web-modules
2024 · github.com · its alternatives →
19
Fireproof – local-first database with Git-like encrypted sync▲99
Hi, HN! As a cofounder of Couchbase, I pioneered mobile sync, and I’ve always wanted to bring the speed and reliability of local-first data to the web, incubating PouchDB among other efforts. I learned the constraints of real world financial applications at McKinsey & Company FinLab, and Merkle integrity research at Protocol Labs taught me smart contract data structures. As part of the JavaScript community (and early hosting provider for NPM) I’ve been waiting, and now with the availability of APIs like Passkeys and Origin Private Filesystem, I’m happy to say the browser is ready to support…
2024 · fireproof.storage · its alternatives →
20
Slashbase – open-source collaborative IDE for databases in browser▲89
Hello HN! My name is Paras and I am building this project called Slashbase. It's an open-source collaborative IDE for databases in browser. Connect to your database, browse data, run a bunch of queries or share queries within your team, right from your browser. Works with two types of databases: PostgreSQL and MongoDB. It's written in Golang and Nextjs React Framework and runs as a single binary. Features: - Cloud based: Setup on your server. Works in browser. - Easy to use: with minimal interface it is simple to use. - Collaborative: Works with your teams. Easy sharing queries within team.…
2022 · github.com · its alternatives →
21
Supabase-Test – Fast Isolated Postgres DBs for Testing Supabase RLS▲30
Hi HN — we've built a testing framework for Supabase that spins up fast, isolated Postgres databases for each test case. It’s designed to make RLS policies easy to validate with real database state, without global test fixtures or mock auth. Features: - Instant isolated Postgres DBs per test - Automatic rollback after each test - RLS-native testing with `.setContext()` for auth simulation - Flexible seeding (SQL, CSV, JSON, JS) - Works with Jest, Mocha, and any async test runner - CI-friendly (runs cleanly in GitHub Actions) We also published example projects and a free set of tutorials:…
Nov 2025 · npmjs.com · its alternatives →
22
PeerDB▲110
Fast, native ETL for Postgres
2023 · peerdb.io · its alternatives →
23
An open-source financial ledger API written in Clojure▲125
Immutable, scalable, and easy to use ledger service. - hoophq/sequence
2020 · github.com · its alternatives →
24
Announcing the FaunaDB Add-On for Netlify▲49
Realize the speed, agility and performance of a scalable, composable web architecture with Netlify. Explore the composable web platform now!
2019 · netlify.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →