Dev tools · alternatives · 2026
24 alternatives to Pathetic – Java pathfinding: 10k concurrent paths in ~7ms
It started with drones. My co-founder and I were building a Minecraft plugin where drones had to navigate through unloaded chunks - terrain that doesn't even exist in memory yet. No existing library had any concept of it, which led to drones being stuck in non-existence. Sloppy at first, tightly coupled to Minecraft's API, we built our own. But somewhere along the way we realized: the problem wasn't Minecraft. It was how Java pathfinding is built in general - object-heavy, GC-hostile, and single-threaded by assumption. So I split the project. The core became its own thing: pure Java 8+ for…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Hey everyone, this is my latest project. Bedrock is a lightweight program runtime: programs assemble down to a few kilobytes of bytecode that can run on any computer, console, or handheld. The runtime is tiny, it can be implemented from scratch in a few hours, and the I/O devices for accessing the keyboard, screen, networking, etc. can be added on as needed. I designed Bedrock to make it easier to maintain programs as a solo developer. It's deeply inspired by Uxn and PICO-8, but it makes significant departures from Uxn to provide more capabilities to programs and to be easier to…
2025 · benbridle.com · its alternatives →
- 2
Visual explanation of pathfinding algorithms and how a*, Dijkstra and BFS can be seen as the same algorithm with different parameter/data structures used under the hood - npretto/pathfinding
2021 · github.com · its alternatives →
- 3
Long-simmering side project that is finally ready to see the light. HAMTs are a cool persistent data structure and implementing one has been a lot of fun. Beyond the code, there is likely some value in the extensive and largely complete implementation docs; basic benchmarks are linked in the README, too. Kind of aiming to be "the libavl for HAMTs". That is obviously a high and aspirational bar but a distinct possibility if it stirs up a little interest and/or contribution. Anyways, it's time for this to go out, collect feedback and maybe even some use outside of toy projects. Let me…
2023 · github.com · its alternatives →
- 4DR
I'd like to invite everyone to try out DontBeEvil.rip, an experimental search engine for developers. tl;dr $ alias rip="curl -G -H 'Accept: text/plain' --url https://dontbeevil.rip/search --data-urlencode " $ rip 'q=Heartbleed bug' DontBeEvil.rip is a year long experiment to see if a small team can build a developer-focused search engine that is self-sustaining on $10 monthly subscriptions. It works by only indexing high-quality resources that are relevant to developers. You won't get useless listicles because we'll never crawl them. Relevant urls are harvested from HN,…
2022 · its alternatives →
- 5
Hey HN, this is Will and David from Fortress (https://news.ycombinator.com/item?id=41426998). We use a lot of async Rust internally, and created this library out of a need for an async-aware concurrent hashmap since there weren’t many available in the Rust ecosystem. Whirlwind is a sharded HashMap with a fully asynchronous API. Just as dashmap is a replacement for std::sync::RwLock, whirlwind aims to be a replacement for tokio::sync::RwLock. It has a similar design and performance characteristics to dashmap, but seems to perform better in read-heavy workloads with tokio's…
2024 · github.com · its alternatives →
- 6
I was fascinated reading through another recent HN submission about a highly efficient implementation of A* in Lisp, which got me thinking about how I could do something similar in Python. However, these kinds of pathfinding algorithms really need complex terrain/mazes with interesting obstructions to showcase what they can do and how they work. So, I started thinking about how I could generate cool and diverse random "mazes" (they aren't really mazes, but I'm not sure what the best term is). I got a bit carried away thinking of lots of different cool ways to generate these mazes, such…
2024 · github.com · its alternatives →
- 7
Show HN: TinyWasm - A tiny WebAssembly Runtime written in Rust Hi HN! I'm excited to share TinyWasm (https://github.com/explodingcamera/tinywasm), a WebAssembly Interpreter I developed for my final university project. The main goal of this project was to deepen my understanding of WebAssembly and interpreter design. TinyWasm successfully passes all the official WebAssembly 1.0 tests and also includes features from future proposals such as like bulk memory operations. Initially more of a research project, TinyWasm focuses on simplicity and portability. It has minimal…
2024 · github.com · its alternatives →
- 8
Optimizer library for tail recursive calls in Java bytecode - Sipkab/jvm-tail-recursion
2020 · github.com · its alternatives →
- 9
Kubernetes cost optimization - catch expensive resource changes before they merge - WozzHQ/wozz
Dec 2025 · github.com · its alternatives →
- 10SH
2012 · blog.minefold.com · its alternatives →
- 11CC
Chunk co-founder here. We spent the last 2 weeks building this to scratch our own itch: As developers, we often have problems that could be solved just by running a few lines of code. Sometimes, running this code on your local machine is fine. But other time, the code need to run automatically reacting to external events or to run continuously, which means, it needs to run on a server somewhere. So now, you have to find a cloud provider, to package or build the code and finally to deploy it. All of that for what could be literally be 4 lines of code. We couldn’t find an easier way to do…
2022 · chunk.run · its alternatives →
- 12
My wife and I recently submitted to a mobile game jam on Newgrounds (yes, it's still around). What started as a question of whether we could do it somehow morphed into whether we could do without so many of the seemingly needless complications rampant in our respective industries. My wife thus did all the art as traditional frame-by-frame animation (no puppets or tweening) and I preceded without a game engine. I did use a pre-processor that gives JS a Lisp syntax (Parenscript), because C-syntax is gross. We hope the end result, while definitely of small scope, will serve to inspire some…
2022 · github.com · its alternatives →
- 13WM
2016 · webblocks.uk · its alternatives →
- 14
This experiment has ended. Thanks for being part of it!
2015 · verizoncraft.github.io · its alternatives →
- 15LP
2015 · mikolalysenko.github.io · its alternatives →
- 16
👾 Rust WebAssembly A* Pathfinding Demo. Contribute to jacobdeichert/wasm-astar development by creating an account on GitHub.
2017 · github.com · its alternatives →
- 17BU
CheerpJ: a WebAssembly JVM running unmodified Java in the browser - Minecraft 1.2.5 proof-of-concept demo.
2024 · browsercraft.cheerpj.com · its alternatives →
- 18
Backend APIs often grow into large orchestration classes full of duplicated calls and manual concurrency. I’ve been working on Mosaic, a Kotlin framework that composes responses out of small, request-scoped “tiles.” Each tile runs once per request, dependencies resolve automatically, and independent tiles execute in parallel without boilerplate. It’s still early (v0.2.0), but working today for caching, concurrency, and testability. Curious to hear feedback on the approach. GitHub: https://github.com/Nick-Abbott/Mosaic Maven Central: org.buildmosaic:mosaic-core:0.2.0
2025 · github.com · its alternatives →
- 19
this is an open-source project. the MVP to end all MVPs. made by me, a teenage developer angry at FAANG employees for creating a soulless, consumer-oriented world. The future is in creation, and the future is in teaching people to slam shit together with ChatGPT. Welcome to the start. :P
2024 · 48hr.dev · its alternatives →
- 20
:package: Minecraft Beta 1.7.3 Server implemented in PHP/HHVM, powered by ReactPHP. - andrewvy/HHVMCraft
2015 · github.com · its alternatives →
- 21
Dev's offline page is fun and we did implement it with Rust and WebAssembly. Go is simple. Can we d... Tagged with go, webassembly, showdev.
2019 · dev.to · its alternatives →
- 22
A demonstration of ways to implement 'threaded code,' a technique used in Forth and in virtual machines like the JVM. - shadowofneptune/threaded-code-benchmark
2022 · github.com · its alternatives →
- 23
Descending a #minecraft cave by tomxor ⛏️🤯 https://t.co/L381OVQfmz #javascript t?c.width=w=64:X=Y=Z=R=5;for(a=S(R),b=C(R),p=3e3;p--;X-=k*a,Z-=k*b,Y+=k*B,R-=k*A,x.fillRect(p%w,p/w,1,2-4/d))for(A=p%w/32-1,B=p/1e3,d=1;(X+d*A*b-d*a^Y+d*B^Z-d*A*a-d*b)%15>1;d+=.1)k=1e-4-3e-4/d/d
2021 · twitter.com · its alternatives →
- 24
2019 · youtu.be · its alternatives →
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- Whirlwind – Async concurrent hashmap for Rust alternatives
- Visual A* pathfinding and maze generation in Python 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 →