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Products that do what I wrote a database engine in TypeScript does
Hi! I wanted to understand more about databases' internals so I wrote one from scratch. It has a T-SQL inspired syntax with support for functions and procedures. It can be used stand-alone as a SQL engine or with a server allowing for persistence and replication to other connected clients. Performance are nothing near sqlite of course but that's beside the point. It’s a small database engine that can run in a web app as a way to store session data, do small calculations on a web worker, store the document/data the user is editing or facilitate “multiplayer” feature by broadcasting the…
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2020 · github.com
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2020 · github.com
- 3NO
Hello HN! The day has finally come to stop adding features and start sharing what I've been building the last 5-6 months. It's a bit of CrewAI, OpenDevon, LangFuse/Cloud all in one, providing devs who prefer TypeScript an integrated framework thats provides a lot out of the box to start experimenting and building agents with. It started after peeking at the LangChain docs a few times and never liking the example code. I began experimenting with automating a simple Jira request from the engineering team to add an index to one of our Google Spanner databases (for context I'm the…
2024 · github.com
- 4KB
2020 · kretes.dev
- 5DA
This demo is build with subZero [0] - The TypeScript library to build internal tools fast Everything is running in JS (express+react-admin), there are no external dependencies (other supporting services), which makes for an easy deployment (single container/service) to any platform that can run JavaScript. The demo uses SQLite as the db but PostgreSQL/MySQL/ClickHouse are also supported. [0] https://getsubzero.today/
2023 · demo.subzero.cloud
- 6SA
We'd like to show you Storex, a database abstraction layer that allows you to move your database interaction code between client- and server-side. By surrounding it with modular, recombinable packages for common problems such as schema migrations, it's possible to re-use logic touching the database across a wide variety of databases, allowing you to develop your code entirely in-browser in your daily development workflow, and then move your database to PostgreSQL/MySQL back-end once you're ready. Storex was designed modularly enough to easily be adapted to mBaaS like Firebase, which is…
2019
- 7AS
Hi HN, we're Eric and Dean, creators of SchemafreeSQL. Its roots go back to an on-line Web App Development Environment we developed back in 1999. It was comprised of an IDE, Web Server, Object Store, Virtual File System, Template System, and polyglot (Java, JavaScript, and Python). Of course, we named it “.OS”. Then we ended up dropping it. But that's a story for another time. It was the ease of use of the Object Store from .OS that we really missed, which brings us back to SchemafreeSQL. It provides an enhanced API to your SQL Database which allows it to function as a Schemaless…
2022 · schemafreesql.com
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2024 · litdb.dev
- 9MO
2019 · github.com
- 10TL
Oct 2025 · tinqerjs.org
- 11DR
We’ve built SQLRooms, an open-source framework for creating single-node data analytics apps powered by DuckDB. It lets you build fully client-side, data-centric apps using React and DuckDB running in the browser (via WebAssembly) or in Electron. No server or backend is required — apps can work offline, preserve data privacy, and run queries on large datasets with sub-second performance. Features: - Query large datasets in browser with DuckDB (WASM) - Modular design for building composable data UIs (query editors, dashboards, notebooks, etc.) - Data privacy-preserving AI assistant that can…
2025 · sqlrooms.org
- 12FC
Hi, we're the creators of Five, the fastest way to go from database or REST API to web GUI. We automatically translate your data structure into a fully responsive web GUI. Our platform gives you the ability to model a MySQL database, write SQL queries, add business logic and integrations through JavaScript or TypeScript functions and launch a multi-user web app to the cloud in a single click (dev, test and prod environments included). Typical use cases for us are building a database admin panel, REST API GUI or any kind of bespoke business software. I'm posting a link to a code-along…
2024 · five.co
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I've built a type-safe semantic layer in code, for ClickHouse. If you're building analytics off ClickHouse in TypeScript, I would love your feedback. With hypequery there is no platform to adopt, no YAML sprawl. It runs where your app runs. Key features: - Define metrics once, reuse them everywhere: Declare dimensions and measures in one place and then pull from the same source of truth. - Compiles to ClickHouse SQL: No service, no proxy, no extra runtime to deploy. It's a library that generates SQL and runs where your app runs. - Multi-tenancy & Authentication ready: Cross-tenant queries…
Jun 2026 · github.com
- 15GA
hi hn, today I'm open sourcing a new SQL-like query language that's built for the web. it has dedicated syntax for request, parsers, selectors, and javascript snippets... it was built on nodejs with the incredible moo lexer and nearley parser. if you're a fan of regular expressions, do I have some code to show you! the website is mostly just a few examples and a playground where you can write & run (& share!) your own queries. there's also an introductory blog post where i try but ultimately fail to justify why this should be its own language and not a library/framework. enjoy!
2024 · getlang.dev
- 16DE
I've built a framework for orchestrating a group of agents that you can talk to that runs directly in the browser. The Drama Engine is a framework for agentic interaction with language models. It is written in TypeScript to execute in any browser, enabling front-end developers to create a party of virtual companions that chats, works, and potentially slays dragons with you.
2024 · drama-engine.com
- 17GA
Hello HN! These last few months I've been working on my first open source project: an embedded database written in pure-go. That took me some months, as I had to learn how to deal with such large packages. Until then, all packages I had made were quite small an did not require much. I usually did not have to worry about things like allocation optimization and instance pools until This project. It started when I wanted to make a port of a tool to a TUI environment. I'm actually used to working with TUIs in golang, so that was my language of choice. The tool I wanted to port is written in…
Feb 2026
- 18PT
2019 · github.com
- 19SS
Please check out out project, Lite Engine[1], a Backend as a Service web application platform. We provide everything you need to rapidly prototype and deploy your single page applications: static file hosting for your html, css, javascript and other assets, a subdomain on our site, security with https, and a 'create your own API' with SQL over CORS and JSON. I think of this as "geocities with a CORS backend". For your backend we've developed a system we call API Queries. You'll define SQL queries, save them on the backend, then execute them with http post requests that return JSON responses.…
2016
- 20RL
Hey folks! There has been a lot of talk recently about the reliability of Supabase and migrating away to other database providers (or even hosting Postgres yourself). I'm a big proponent of writing actual backend code rather than locking yourself into frameworks like Supabase. If you already built all your client-side code around it though, then migrating is not a trivial task. Replacebase is designed to help with that. It's a Typescript library that you can plug into actual backend code that exposes a Supabase-compatible API so that you don't have to make significant changes to your…
Feb 2026 · github.com
- 21AD
Hello HN! I've been working on Atomic Database[1] for almost exactly a month now, having restarted from an earlier Hackathon prototype version. Atomic Database is a deductive database like Datalog that has a useful GUI interface, a natural language query system, smart metadata storage, and gradual typing capabilities. The actual database backend of all this is based on Entity Attribute Value triples currently (I don't forsee changing it, as yet!). This is still very much a prototype, but I feel like I'm at the stage in its evolution where I need some outside input and, possibly, help. To…
2019
- 22AD
Hey hackernews! I'd like to share a hobby and passion project I've been working on for almost a year now. It's an open-source storage engine (underlying component of a database(s)) similar to that of LevelDB/RocksDB but written entirely in C. The storage engine is called TidesDB. TidesDB is written entirely in C. It's designed as a fast, transactional key-value storage engine built on a log-structured merge-tree (LSM-tree) architecture. My journey with TidesDB began nearly 2 years ago whilst I was experimenting with various data structures and databases in Go. When I encountered the…
2025 · github.com
- 23WR
How It Works - Offline Indexing: Docs are processed and embedded using the GTE-small model at build time. Browser-Based Magic: - SQLite database (stored in the browser) for vector search. - Local embedding model for query processing. - Local LLaMA model for response generation using WebLLM. - Everything Happens Locally: No data leaves the user’s device. Key Benefits - No API Costs: Everything runs in the browser—zero backend expenses. - Unlimited Chats: No rate limits or usage restrictions. - Privacy-First: Your data stays on your device, always. You can find the code here:…
2024 · docs.akiradocs.ai
- 24TC
2020 · github.com
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