Dev tools · alternatives · 2026

24 alternatives to Retake – Open-Source Hybrid Search for Postgres

Hey HN! We're Phil and Ming, co-founders of Retake (https://github.com/getretake/retake). Retake is an open source tool that adds keyword and semantic (i.e hybrid) search to databases. We’ve started by extending the capabilities of Postgres with an SDK for lightning-fast queries. We built Retake to fix two issues: keeping vectors in sync with Postgres in real time is difficult, and most vector databases aren’t built for hybrid search. A quick refresher: “keyword search” refers to a technique where results are scored based on the appearance of exact words or terms.…

Retake is an open-source tool that adds keyword and semantic hybrid search capabilities to Postgres databases. It provides an SDK for fast queries while keeping vector embeddings synchronized with data in real time.… 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 1 we have checked on their own sites, 1 of them free or with a free tier. Retake – Open-Source Hybrid Search for Postgres launched in 2023; newer entries below may have overtaken it.

1
Postgres extension for BM25 relevance-ranked full-text search▲203
Last summer we faced a conundrum at my company, Tiger Data, a Postgres cloud vendor whose main business is in timeseries data. We were trying to grow our business towards emerging AI-centric workloads and wanted to provide a state-of-the-art hybrid search stack in Postgres. We'd already built pgvectorscale in house with the goal of scaling semantic search beyond pgvector's main memory limitations. We just needed a scalable ranked keyword search solution too. The problem: core Postgres doesn't provide this; the leading Postgres BM25 extension, ParadeDB, is guarded behind AGPL; developing our…
Mar 2026 · github.com · its alternatives →
2
R2R V2 – A open source RAG engine with prod features▲251
Hi HN! We're building R2R [https://github.com/SciPhi-AI/R2R], an open source RAG answer engine that is built on top of Postgres+Neo4j. The best way to get started is with the docs - https://r2r-docs.sciphi.ai/introduction. This is a major update from our V1 which we have spent the last 3 months intensely building after getting a ton of great feedback from our first Show HN (https://news.ycombinator.com/item?id=39510874). We changed our focus to building a RAG engine instead of a framework, because this is what developers asked for the most.…
2024 · github.com · its alternatives →
3
postgres.new▲774
The in-browser Postgres sandbox with AI assistance
2024 · database.build · its alternatives →
4
Developer Utilities by Retool▲232
Import CSV to PostgreSQL, generate a mock API, and 20+ more
2021 · retool.com · its alternatives →
5
BemiDB – Postgres read replica optimized for analytics▲209
Hi HN! We're Evgeny and Arjun, and we’re building a better way to do analytics with Postgres. We love Postgres for its simplicity, power, and rich ecosystem. But engineers have to still get bogged down with heavyweight and expensive OLAP systems when connecting an analytics data stack. Postgres is amazing at OLTP queries, but not for OLAP queries (large data scans and aggregations). Even in this case, we’ve still heard from countless scaling startups that they still try to use only a read replica to run analytics workloads since they don’t want to deal with the data engineering complexity of…
2024 · github.com · its alternatives →
6
SereneDBfree▲262
Ultra-Fast Search & Analytics Database, Agentic AI ready
Sep 2026 · serenedb.com · its alternatives →
7
PgQueuer – Transform PostgreSQL into a Job Queue▲376
PgQueuer is a Python job queue that uses PostgreSQL for everything — queue storage, locking, notifications. No Redis, no RabbitMQ, no separate broker to operate. If your app already has Postgres, you already have the broker. After ~2 years and 26 minor releases, 1.0 ships today as the first stable release. Strict semver from here on. Thanks to everyone who contributed and left feedback!
2024 · github.com · its alternatives →
8PN
PostgresML, now with analytics and project management▲444
We've been hard at work for a few weeks and thought it's time for another update. In case you missed our first post, PostgresML is an end-to-end machine learning solution, running alongside your favorite database. This time we have more of a suite offering: project management, visibility into the datasets and the deployment pipeline decision making. Let us know what you think! Demo link is on the page, and also here: https://demo.postgresml.org
2022 · postgresml.org · its alternatives →
9
I open-sourced the in-memory PostgreSQL I built at work for E2E tests▲379
In-memory Postgres for unit/E2E tests. Contribute to hexclave/pgmock development by creating an account on GitHub.
2024 · github.com · its alternatives →
10
FastGraphRAG – Better RAG using good old PageRank▲457
Hey there HN! We’re Antonio, Luca, and Yuhang, and we’re excited to introduce Fast GraphRAG, an open-source RAG approach that leverages knowledge graphs and the 25 years old PageRank for better information retrieval and reasoning. Building a good RAG pipeline these days takes a lot of manual optimizations. Most engineers intuitively start from naive RAG: throw everything in a vector database and hope that semantic search is powerful enough. This can work for use cases where accuracy isn’t too important and hallucinations are tolerable, but it doesn’t work for more difficult queries that…
2024 · github.com · its alternatives →
11
Polygres▲58
Polygres turns the Postgres you already run into internal search for AI agents. Rows, relationships, and embeddings: one hybrid query, one ranked answer.
Jul 2026 · polygres.com · its alternatives →
12
Hydra 1.0 – open-source column-oriented Postgres▲269
hi hn, hydra ceo here hydra is an open source, column-oriented postgres. you can set up remarkably fast aggregates on your project in minutes to query billions of rows instantly. postgres is great, but aggregates can take minutes to hours to return results on large data sets. long-running analytical queries hog database resources and degrade performance. use hydra to run much faster analytics on postgres without making code changes. data is automatically loaded into columnar format and compressed. connect to hydra with your preferred postgres client (psql, dbeaver, etc). following 4 months…
2023 · hydra-so.notion.site · its alternatives →
13
Pg_yregress, Structured Testing for Postgres▲56
Originally inspired by pg_regress, pg_yregress provides a TAP-compatible test executor that allows for better test organization, easier instance management, native JSON handling and so on.
2023 · github.com · its alternatives →
14
Meilisearch AI▲241
Boost relevance and UX with fast hybrid and semantic search
2025 · meilisearch.com · its alternatives →
15
SeekStorm – open-source sub-millisecond search in Rust▲245
SeekStorm: vector & lexical search - in-process library & multi-tenancy server, in Rust. - SeekStorm/SeekStorm
2024 · github.com · its alternatives →
16
DbGate – open-source, cross-platform SQL+noSQL database client▲198
DGate is fast and easy-to-use database client and SQL editor for MySQL, PostgreSQL, SQL Server, MongoDB and more. For desktop and web, it's open-source.
2021 · dbgate.org · its alternatives →
17
Scalable reverse image search built on Kubernetes and Elasticsearch▲139
:crystal_ball: Scalable reverse image search built on Kubernetes and Elasticsearch - dsys/match
2016 · github.com · its alternatives →
18
PostgreSQL performance and cost across 23 EC2 instance types▲97
Hey! I'm Andrei. I got frustrated by how people tend to build overcomplicated backend systems, being "motivated" by big tech case studies and popular books. So, I started exploring lean architecture, and building my digital garden of ideas, approaches and data that align with this direction. Here I want to present one of the tools – Sizing tool for PostgreSQL. I've benchmarked PostgreSQL on different EC2 instances and disks, with different initial data sets to see performance that these instances can give you. And I've built a tool to visualize this data, which I welcome you to explore. So,…
Jul 2026 · postgres.saneengineer.com · its alternatives →
19AT
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 →
20
GraphQL for Postgres▲195
GraphQL for Postgres. Contribute to solidsnack/GraphpostgresQL development by creating an account on GitHub.
2015 · github.com · its alternatives →
21
Tag – instantly jump to your ag matches▲98
Instantly jump to your ag or ripgrep matches. Contribute to aykamko/tag development by creating an account on GitHub.
2016 · github.com · its alternatives →
22
I built an open-source data copy tool called ingestr▲156
Hi there, Burak here. I built an open-source data copy tool called ingestr (https://github.com/bruin-data/ingestr) I did build quite a few data warehouses both for the companies I worked at, as well as for consultancy projects. One of the more common pain points I observed was that everyone had to rebuild the same data ingestion bit over and over again, and each in different ways: - some wrote code for the ingestion from scratch to various degrees - some used off-the-shelf data ingestion tools like Fivetran / Airbyte I have always disliked both of these approaches,…
2024 · github.com · its alternatives →
23
ShapedQL▲211
The SQL engine for search, feeds, and AI agents
Jan 2026 · its alternatives →
24DD
Data Diff – compare tables of any size across databases▲127
Gleb, Alex, Erez and Simon here – we are building an open-source tool for comparing data within and across databases at any scale. The repo is at https://github.com/datafold/data-diff, and our home page is https://datafold.com/. As a company, Datafold builds tools for data engineers to automate the most tedious and error-prone tasks falling through the cracks of the modern data stack, such as data testing and lineage. We launched two years ago with a tool for regression-testing changes to ETL code…
2022 · 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 →