* [ActiveAdminImport v7.0.0](https://github.com/activeadmin-plugins/active_admin_import) – Fast, efficient CSV importer for Active Admin with validations, bulk inserts, and encoding handling.

* [sqly v0.23.0](https://github.com/nao1215/sqly) – Command-line tool that executes SQL against CSV, TSV, JSON, Parquet, Excel, ACH, and Fedwire files via an in-memory SQLite database.

* [filesql v0.14.0](https://github.com/nao1215/filesql) – SQL driver exposing CSV, TSV, LTSV, Parquet, and XLSX files as SQLite3-accessible tables with compression support.

* [EasyDB v2.9.0](https://github.com/shencangsheng/easydb_app) – Lightweight Tauri- and Rust-based desktop app for querying local CSV, Excel, JSON, NDJSON, and Parquet files using SQL without an external database.

* [hucre v0.6.0](https://github.com/productdevbook/hucre) – Zero-dependency TypeScript spreadsheet engine supporting read/write of XLSX, CSV, and ODS with streaming, schema validation, and round-trip preservation.

* [Mapshaper v0.7.22](https://github.com/mbloch/mapshaper) – Software for editing Shapefile, GeoJSON, TopoJSON, CSV, and other data formats.

* [Tableau v0.16.0](https://github.com/tableauio/tableau) – Modern proto3-based configuration converter for Excel/CSV/XML/YAML to JSON/Text/Bin.

* [trdsql v1.2.3](https://github.com/noborus/trdsql) – CLI that executes SQL queries on CSV, LTSV, JSON, YAML and TBLN files and outputs in various formats.

* [SmarterCSV v1.17.3](https://github.com/tilo/smarter_csv) – Library for reading and writing CSV files with a focus on performance and ease of use.