Dev tools · alternatives · 2026
24 alternatives to Bolt: A research language with finer-grained concurrency than Rust
Bolt is a language with in-built data-race freedom! - mukul-rathi/bolt
Bolt is a research programming language designed for developers who need finer-grained concurrency control than Rust provides. It offers advanced concurrency primitives to handle complex parallel processing tasks. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Bolt: A research language with finer-grained concurrency than Rust launched in 2020; newer entries below may have overtaken it.
- 1
I've built many interpreters over the years, and Bolt represents my attempt at building the scripting language I always wanted. This is the first public release, 0.1.0! I've felt like most embedded languages have been moving towards safety and typing over years, with things like Python type hints, the explosive popularity of typescript, and even typing in Luau, which powers one of the largest scripted evironments in the world. Bolt attempts to harness this directly in the lagnauge rather than as a preprocessing step, and reap benefits in terms of both safety and performance. I intend to be…
2025 · github.com · its alternatives →
- 2
bolt.new▲1,230Build and scale high-performing websites & apps using your words. Join millions and start building today.
2024 · bolt.new · its alternatives →
- 3
- 4
Yes, I know hardly anyone uses Swing anymore. :-) I basically just did it for fun and thought I would share.
2023 · github.com · its alternatives →
- 5
Beef Programming Language. Contribute to beefytech/Beef development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 6BA
2015 · bolt-project.org · its alternatives →
- 7
An implementation of a dynamic programming language in Rust. Includes: Parser/Compiler, REPL, Virtual Machine, Bytecode Disassembler This started out as a learning project to teach myself Rust. It has grown into a decently substantial piece of software and I've learned quite a bit in the process! Some neat things: + A garbage collector that can store dynamically sized types without any double-indirection (i.e. I have my own Box implementation with manual alloc/dealloc) + The smart pointer used to reference GCed data is a thin pointer. The ptr metadata needed for DSTs is stored in…
2022 · github.com · its alternatives →
- 8
Slint is a declarative GUI toolkit written primarily in Rust, with API support for multiple programming languages such as C++ and JavaScript. It is designed for desktop and embedded usage. The Slint website has just been redesigned. And we added a new Royalty-Free License option besides GPL and commercial
2023 · slint.dev · its alternatives →
- 9DDarklang▲326
2019 · medium.com · its alternatives →
- 10
Ape Programming Language. Contribute to kgabis/ape development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 11
An experimental programming language for data flow - calebwin/pipelines
2019 · github.com · its alternatives →
- 12
This is a hobby project of mine that I started a few years ago to learn about programming language implementation. It was created 95% without AI, although a few recent commits include code from Gemini CLI. I started out following Crafting Interpreters, but gradually branched off that until I had almost nothing left in common. Tech stack: Rust, Cranelift (JIT compilation), LALRPOP (parser). Original title: "A small programming language where everything is a value" (edited based on comments)
Jan 2026 · github.com · its alternatives →
- 13SA
A high performance & cross-platform layout engine
2019 · vislyhq.github.io · its alternatives →
- 14
- 15
Copper is an operating system for robots - build, run, and replay your entire robot deterministically. - Home · copper-project/copper-rs Wiki
2024 · github.com · its alternatives →
- 16
- 17
Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate. Such a nice DX combo for writing new languages. Still a work in progress, but I thought I'd share :)
2025 · github.com · its alternatives →
- 18
Supercharge your development workflow
2024 · bolt.new.chromeextension.nl · its alternatives →
- 19
Hi HN, I built MOL, a domain-specific language for AI pipelines. The main idea: the pipe operator |> automatically generates execution traces — showing timing, types, and data at each step. No logging, no print debugging. Example: let index be doc |> chunk(512) |> embed("model-v1") |> store("kb") This auto-prints a trace table with each step's execution time and output type. Elixir and F# have |> but neither auto-traces. Other features: - 12 built-in domain types (Document, Chunk, Embedding, VectorStore, Thought, Memory, Node) - Guard assertions: `guard answer.confidence > 0.5 : "Too low"` -…
Feb 2026 · github.com · its alternatives →
- 20
A simple, self hosted, low level programming language. - mcilloni/fork
2018 · github.com · its alternatives →
- 21
I spent the past 2 weeks making this toy programming language. I basically forked the Go scanner/parser, and changed the syntax to have functions return a single value. This enable proper Result/Option type to be used as well as propagating errors with an operator. I also wanted to have short "type inferred" anonymous functions to be able to use functions like Map/Reduce/Filter, without having to use 100 characters to specify the types.
2025 · github.com · its alternatives →
- 22
I've come to prefer modeling state machines with nested states, but implementing them by hand requires a large amount of error-prone boilerplate that obscures the important logic of the state machine. I found that the existing offerings in the Rust ecosystem - while inspiring - lacked a number of features that I was looking for, so I spent the last few months building moku. Feedback is welcome!
2025 · docs.rs · its alternatives →
- 23IA
2018 · inko-lang.org · its alternatives →
- 24LA
Hi HN, I made Lingo - the SQLite of semantic search. I'm a self-taught developer and researcher who left school at 16, and I've spent some time exploring a first-principles approach to system design for various frontier problems. In this case it's AI that challenges the 'bigger is better' transformer paradigm. Lingo is the first piece of that research, a high-performance linguistic database designed to run on-device. The full technical overview and manifesto is here: https://medium.com/@robm.antunes/bcd1e9752af6 The paper has been archived on Zenodo with a DOI:…
2025 · its alternatives →
Also compare
- Bolt – A super-fast, statically-typed scripting language written in C alternatives
- bolt.new alternatives
- Boltic alternatives
- Sierra, a DSL for building Java Swing applications alternatives
- Beef, a new performance-oriented programming language alternatives
- Bolt – A unified Python interface for local and distributed nd-arrays alternatives
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 →