A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode, OpenClaw, Gemini CLI & Hermes Agent. Only official website: ccswitch.io
Crate
indexmap
Hash map that preserves insertion order.
What it is
IndexMap is a hash table that preserves the order entries were inserted, while offering O(1) average lookup, insertion, and removal. It supports indexed access by position and bidirectional iteration in insertion order.
Why it is commonly used
Used when a map needs deterministic iteration order — JSON serialization where key order should be preserved, configuration parsing, and any case where the order entries were added carries meaning.
802
Repositories
93%
Actively maintained
742
Updated ≤ 30 days
3.6M
Total stars
696
Owners
Counted from the Cargo.toml manifests of the 802 indexed repositories that declare indexmap as a dependency — not download counts. Dependency data last verified 2026-08-13.
Often used with
Crates that show up unusually often in indexmap projects. The most distinctive pairings rank first — crates these projects use far more than the average indexed Rust project does, not just crates that are popular everywhere. Each percentage is the share of indexmap projects that also use it.
dunce10.3%petgraph11.6%indoc11.3%either13.5%insta14%hashbrown17.1%pretty_assertions13.3%nom11.7%heck11%rustc-hash21.6%derive_more16.6%tikv-jemallocator12.7%num-bigint11.1%memchr16%smallvec28.6%similar11.6%ahash12.6%serde_with18.2%proptest13.5%humantime13.5%paste16.3%itertools43.4%globset10.6%strum31.4%
Used by these organizations
CloudflareMozillaAWSMicrosoftGoogleOxide ComputerParity TechnologiesDenoZed IndustriesFly.ioTursoSurrealDBEmbark StudiosThe Rust ProjectFuel LabsAstralTauriOpenAIWarpStarshipMeilisearchRerunTokioBevy EngineBytecode AllianceLinebenderNushellQdrantPolarsQuickwitDatadogHyperiumgfx-rsprobe-rsHelixPyO3YewLeptosWasmerTypstRust CLI WGSerdeServoesp-rsParadigmMatrix.org
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