simdjson
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Description:
SIMD-accelerated C++ JSON parser
Type: Formula  |  Latest Version: 4.2.3@0  |  Tracked Since: Dec 18, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: json parser c++ simd performance
Install: brew install simdjson
About:
simdjson is a high-performance JSON parser designed for modern C++ that leverages SIMD instructions to achieve parsing speeds significantly faster than conventional libraries. It validates and parses JSON documents in a single pass, offering a user-friendly API that is largely drop-in compatible with other parsers. This performance makes it ideal for applications processing large datasets or requiring low-latency data interchange.
Key Features:
  • SIMD-accelerated parsing (AVX2, AVX-512, NEON)
  • On-demand parsing mode for minimal memory overhead
  • Drop-in replacement API for standard JSON libraries
  • Full JSON specification compliance
Use Cases:
  • High-throughput web servers and APIs
  • Big data processing and analytics pipelines
  • Real-time data ingestion systems
Alternatives:
  • nlohmann/json – Focuses on ease of use and modern C++ idioms, but significantly slower than simdjson for large files.
  • RapidJSON – A fast C++ parser, though simdjson generally outperforms it on modern CPUs using SIMD optimization.
Version History
Detected Version Rev Change Commit
Dec 18, 2025 2:52am 4.2.3 0 VERSION_BUMP e6c0c570
Nov 15, 2025 11:12pm 0 VERSION_BUMP bbab5297
Nov 12, 2025 2:13am 0 VERSION_BUMP 981b6707
Nov 3, 2025 11:41pm 0 VERSION_BUMP 8b9087d3
Nov 3, 2025 7:48pm 0 VERSION_BUMP 4efc6c44
Oct 28, 2025 4:08pm 0 VERSION_BUMP d80d60c5
Oct 28, 2025 5:31am 0 VERSION_BUMP 770825f4
Oct 2, 2025 2:07am 0 VERSION_BUMP 164a44d7
Sep 10, 2025 9:47am 0 VERSION_BUMP 59854938
Dec 12, 2024 8:18pm 0 VERSION_BUMP ab4c1eda