Top 3 C++ hyperscan Projects

vectorscan

5 413 9.4 C++

A portable fork of the high-performance regular expression matching library

Project mention: Accelerating Regular Expressions with AVX-512 at 1.5 GB/s/core | news.ycombinator.com | 2023-05-22

Other options for accelerated regexes:
https://github.com/VectorCamp/vectorscan

grab

2 257 0.0 C++

experimental and very fast implementation of a grep (by stealth)

Project mention: Ugrep – a more powerful, ultra fast, user-friendly, compatible grep | news.ycombinator.com | 2023-12-30

Also look at https://github.com/stealth/grab from Sebastian Krahmer.

InfluxDB

www.influxdata.com featured

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
hypergrep

5 163 9.3 C++

Recursively search directories for a regex pattern

Project mention: Ugrep – a more powerful, ultra fast, user-friendly, compatible grep | news.ycombinator.com | 2023-12-30

Another issue with Hyperscan is that if you enable HS_FLAG_UTF8[1], which hypergrep does[2,3], and then search invalid UTF-8, then the result is UB.
> This flag instructs Hyperscan to treat the pattern as a sequence of UTF-8 characters. The results of scanning invalid UTF-8 sequences with a Hyperscan library that has been compiled with one or more patterns using this flag are undefined.
That's another issue you'll need to grapple with if you use Hyperscan. PCRE2 used to have this issue[4], but they've since defined the semantics of searching invalid UTF-8 with Unicode mode enabled. ripgrep 14 uses that new mode, but I haven't updated that FAQ answer yet.
[1]: https://intel.github.io/hyperscan/dev-reference/api_files.ht...
[2]: https://github.com/p-ranav/hypergrep/blob/ee85b713aa84e0050a...
[3]: https://github.com/p-ranav/hypergrep/blob/ee85b713aa84e0050a...
[4]: https://github.com/BurntSushi/ripgrep/blob/master/FAQ.md#why...

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).