Life & fun · alternatives · 2026

24 alternatives to SuperString – A fast and memory-optimized string library for C++

A fast and memory-optimized string library for C++ - btwael/SuperString

SuperString is a C++ string library designed for fast performance and efficient memory usage. It provides developers working with text processing and string manipulation in C++ with optimized alternatives to standard… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. SuperString – A fast and memory-optimized string library for C++ launched in 2018; newer entries below may have overtaken it.

1
C++11 immutable string▲23
I'm looking for feedback on this approach to an immutable string (istring). The idea is to provide a super fast immutable string that can be efficiently passed to lambdas as well as be 100% thread safe. Another bonus is faster hashing. If a string literal is given to istring, then the hash is computed at compile time! Other strings will have their hashes cached for later use. The istring is designed more or less after the python string in this regard. It should also consume less memory than std::string and perform faster in all other areas.
2014 · github.com · its alternatives →
2
Array with Constant Time Access and Fast Insertion and Deletion▲300
Contribute to igushev/IgushArray development by creating an account on GitHub.
2019 · github.com · its alternatives →
3
StringZilla v3 with C++, Rust, and Swift bindings, and AVX-512 and NEON▲15
Hi HN! I've spent the last few weeks optimizing the string operations in StringZilla. You'd be surprised how much performance GLibc and the Standard Templates Library of C++ are leaving on the table, especially on Arm and, likely, on RISC-V. I've significantly increased the number of implemented algorithms for different workloads. Searching across English texts on Arm, for example: - is 4.4x faster than STL, - and 16.8x faster in reverse order. The new version of the library now includes a C++ binding largely compatible with the C++ Standard, featuring all 17 overloads of the `replace`…
2024 · github.com · its alternatives →
4
2x-4x faster strlen() in C▲19
GitHub Gist: instantly share code, notes, and snippets.
2023 · gist.github.com · its alternatives →
5
RapidFuzz – A fast string matching library for Python▲134
Rapid fuzzy string matching in Python using various string metrics - rapidfuzz/RapidFuzz
2020 · github.com · its alternatives →
6
Big List of Naughty Strings for testing user-input data▲514
The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data. - minimaxir/big-list-of-naughty-strings
2015 · github.com · its alternatives →
7
A Fast, Malloc-Free C++14 Json Parser and Encoder▲98
Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod
2014 · github.com · its alternatives →
8
A fast, hopefully accurate, fuzzy matching library written in Go▲186
Go library that provides fuzzy string matching optimized for filenames and code symbols in the style of Sublime Text, VSCode, IntelliJ IDEA et al. - sahilm/fuzzy
2018 · github.com · its alternatives →
9
A hash array-mapped trie implementation in C▲171
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 →
10
A pure C89 implementation of Go channels, with blocking selects▲271
A pure C (-std=c89) implementation of Go channels, including blocking and non-blocking selects. - GitHub - rochus-keller/CspChan: A pure C (-std=c89) implementation of Go channels, including blocking and non-blocking selects.
2023 · github.com · its alternatives →
11
Compile-time HTML parsing in C++14▲175
A C++ HTML template engine that uses compile time HTML parsing - rep-movsd/see-phit
2017 · github.com · its alternatives →
12
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 →
13HP
High Performance Simple String Processing in C++▲16
C++ String Toolkit Library (StrTk)
2018 · partow.net · its alternatives →
14
Embedded Ring Buffer C++98▲26
A ring buffer designed to work with embedded devices, does not use heap allocations. - RichardB01/EmbeddedRingBuffer
2021 · github.com · its alternatives →
15
Smart pointers for the C programming language▲126
Smart pointers for the (GNU) C programming language - Snaipe/libcsptr
2015 · github.com · its alternatives →
16
A fast JSON library for Go▲119
Fast JSON encoder/decoder compatible with encoding/json for Go - goccy/go-json
2021 · github.com · its alternatives →
17
LazyCode – C++14 composable, lazily evaluated map, filter, fold▲66
C++14: bringing in those expressions that you wish you had, Lazily evaluated, compossible generators, maps, filters, ranges and more... - GitHub - SaadAttieh/lazyCode: C++14: bringing in those expressions that you wish you had, Lazily evaluated, compossible generators, maps, filters, ranges and more
2018 · github.com · its alternatives →
18
uWrap.js – A faster and more accurate text wrapping util in < 2KB▲121
A 10x faster and more accurate text wrapping util in < 2KB (min) - leeoniya/uWrap
2025 · github.com · its alternatives →
19WB
We built a fast substring search engine in Go▲145
2013 · tamber.com · its alternatives →
20
A nice C string API▲107
A convenient C string API, friendly alongside classic C strings.
2022 · github.com · its alternatives →
21
Fast Random Library for C++17▲52
Morning HN. Random number generation feels is a somewhat underrepresented topic in the C++ realm. There is a lot of questionable info about it found online and even the standard library is quite behind the times in terms of it's algorithms. It suffers from trying to accommodate sometimes impractical standard requirements and has several ways of getting significantly bad statistical results. This leaves a lot easily achievable performance & quality on the table. So, being a mathematician who mostly works with stochastic models and wants these models to run fast and well, I embarked on a…
2025 · github.com · its alternatives →
22
NSString + Ruby▲87
2013 · github.com · its alternatives →
23
C++ runtime/compile-time detection in constexpr functions▲83
An approach for runtime detection inside a constexpr function - SaadAhmad/in_constexpr
2017 · github.com · its alternatives →
24
Structopt for C++ – Parse command line arguments by defining a struct▲85
Parse command line arguments by defining a struct. Contribute to p-ranav/structopt development by creating an account on GitHub.
2020 · github.com · its alternatives →

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