Dev tools · alternatives · 2026

FORTRAN

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Open-source SIMD-accelerated math library for C/C++/C#/Java/FORTRAN launched in 2013; newer entries below may have overtaken it.

1
Odyssey 3▲159
A world model that simulates physics in real time
13d ago · odyssey.systems · its alternatives →
2
High-performance mathematical paradigms in Python▲7
Improve the execution speed of pythonic paradigms.
2018 · medium.com · its alternatives →
3AS
A small symbolic math command line using algebrite and katex▲5
2018 · bwasti.com · its alternatives →
4NT
NumPy to C++14: the xtensor cheat sheet▲6
2017 · xtensor.readthedocs.io · its alternatives →
5
Faking SIMD to Search and Sort Strings 5x Faster▲29
I want to share a really dumb, but very practical project I have packaged this summer, to perform operations on strings much faster. I was using Python to work with a multi-terabyte newline-delimited file. Reading, splitting, and shuffling it was a nightmare. So, I wrapped a trivial hardware-friendly heuristic I've been using for the last few years into a CPython library. The part I enjoyed the most is implementing SIMD behavior without SIMD instructions... Using 64-bit words to work at 8-bit granularity. Unlike conventional SIMD, the code would remain the same for ~~almost~~ any hardware.…
2023 · ashvardanian.com · its alternatives →
6
Lightweight 2D/3D engine in D with Raylib▲8
2022 · github.com · its alternatives →
7RE
Redesigned: Escherpad, a collaborative math and code notebook▲6
2015 · escherpad.com · its alternatives →
8XR
Xcell – Reactive, spreadsheet-like calculations in JavaScript▲9
2018 · tomazy.github.io · its alternatives →
9CF
Conduit for C++: Lazy Sequences Using the Coroutine TS▲7
2018 · medium.com · its alternatives →
10
C++ Quantum Simulator written from scratch▲7
Nov 2025 · github.com · its alternatives →
11II
I implemented Tilde – Operator for Go Compiler after months of research▲6
2021 · medium.com · its alternatives →
12
Xenops: LaTeX editing with automatic asynchronous rendering in Emacs▲5
An editing environment for LaTeX mathematical documents - dandavison/xenops
2020 · github.com · its alternatives →
13TC
The C++ Iceberg▲7
2022 · fouronnes.github.io · its alternatives →
14AA
Awl, a toy Lisp language written in C and transpiled to JavaScript▲8
2014 · skepsi.me · its alternatives →
15
Sheets Add-On for Monte-Carlo Simulations▲7
2020 · gsuite.google.com · its alternatives →
16
The Julia Language▲10
A high-level, high-performance dynamic programming language
2017 · julialang.org · its alternatives →
17PA
Philip2 – an Elm-to-OCaml compiler▲8
2019 · medium.com · its alternatives →
18
Common Lisp tutorials with OpenGL graphics▲7
2023 · youtube.com · its alternatives →
19
Beating GCC 12 – 118x Speedup for Jensen Shannon D. Via AVX-512FP16▲8
SIMD-accelerated distances, dot products, matrix ops, geospatial & geometric kernels for 16 numeric types — from 6-bit floats to 64-bit complex — across x86, Arm, RISC-V, and WASM, with bindings for Python, Rust, C, C++, Swift, JS, and Go 📐 - Release Beating GCC 12 - 118x Speedup for Jensen Shannon
2023 · github.com · its alternatives →
20TA
tut, an open platform for programming tutorials▲8
2013 · king-tutorial.com · its alternatives →
21
Threadsafe, SIMD-Accelerated HyperLogLog Implementation▲5
C++ Implementations of sketch data structures with SIMD Parallelism, including Python bindings - dnbaker/sketch
2017 · github.com · its alternatives →
22
Less Slow C++▲6
Earlier this year, I took a month to reexamine my coding habits and rethink some past design choices. I hope to rewrite and improve my FOSS libraries this year, and I needed answers to a few questions first. Perhaps some of these questions will resonate with others in the community, too. - Are coroutines viable for high-performance work? - Should I use SIMD intrinsics for clarity or drop to assembly for easier library distribution? - Has hardware caught up with vectorized scatter/gather in AVX-512 & SVE? - How do secure enclaves & pointer tagging differ on Intel, Arm, & AMD? - What's…
2025 · github.com · its alternatives →
23KJ
Kefir.js – a fast FRP lib with transducers support▲6
2014 · pozadi.github.io · its alternatives →
24
A REPL for practising bitwise operations, written in Rust▲5
2017 · github.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 →