# Install oj with Homebrew JSON parser and visualization tool. Version 1.28.2 via Homebrew; verified 2026-07-06. ## Install ```sh sudo av install brew:oj ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install oj ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:oj - **Package manager:** Homebrew - **Package manager page:** - **Version:** 1.28.2 - **Source summary:** JSON parser and visualization tool - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** MIT - **Source archive:** - **Last updated:** 2026-07-06T04:50:51Z - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - oj (cli) - oj (alias) ## Build dependencies - go ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-08 - Package-manager version: 1.28.2 - Package-manager updated: 2026-07-06 - Local data: ok - Upstream repository: https://github.com/ohler55/ojg - Upstream latest detected: v1.28.2 (current) ## Project history and usage The Homebrew `oj` package installs the `oj` command from OjG, short for Optimized JSON for Go. OjG is a Go JSON toolkit with a fast parser, validator, writer, JSONPath implementation, generic JSON data model, SEN parser, and command-line JSON filtering/visualization tool. ### Project history OjG was created by Peter Ohler, author of the older Ruby `oj` gem and C `ojc` parser. The repository was created on 2020-04-12. Its design document says the project began from the idea of building a fast JSON parser, generic data model, and full JSONPath implementation for Go, informed by Ohler's earlier JSON parser work. The project architecture split functionality into packages such as `oj` for parsing, `jp` for JSONPath, `gen` for generic JSON node types, `alt`, `asm`, `sen`, and later `discover`. The `oj` command wraps those libraries for shell use: filtering and extracting with JSONPath, sorting, reformatting, discovering JSON in documents, and colorizing output. The changelog shows steady evolution after the early releases. Version 1.10.0 in 2021 added a tokenizing callback parser; later releases added path matching, match handlers, script function registration, JSON discovery, and compatibility fixes while keeping semantic versioning. ### Adoption history OjG is niche but visible in Go JSON-performance circles. The GitHub API reported 950 stars and 53 forks, while Homebrew's 2026-07-01 formula API reported 194 installs over 365 days for the CLI package. Its appeal is strongest where developers want JSONPath over arbitrary JSON-like data or a command-line JSON filter with Go-native implementation details. The README positions OjG against Go's standard `encoding/json` package through parser, reader, validator, and writer benchmarks, with benchmark links and a separate comparison repository. That performance framing is the main adoption hook. ### How it is used Go developers import packages such as `github.com/ohler55/ojg/oj` for parsing and validation, `jp` for JSONPath expressions, and `gen` for type-safe generic data. CLI users install `github.com/ohler55/ojg/cmd/oj` or `brew install oj` to query and format JSON from files and streams. The parser can process a single JSON document or multiple JSON elements, and options allow comments in JSON. The command-line tool uses JSONPath expressions for filtering, extraction, sorting, reformatting, discovery, and colorized output. ### Why package nerds care The package is a good example of a name collision resolved by package-manager context: Homebrew's `oj` is not the older Ruby gem, but the Go command from OjG. Its upstream project still deliberately links the Go implementation to Ohler's Ruby `Oj` and C `OjC` lineage. For maintainers, `oj` is a compact Go CLI package with no runtime dependencies in Homebrew, but it carries a rich upstream library surface. The formula's distinction between the CLI name `oj` and upstream module `ojg` is the kind of metadata wrinkle package nerds notice. ### Timeline - 2020-04-12: the `ohler55/ojg` repository was created. - 2021-04-22: version 1.10.0 added the tokenizing callback parser. - 2023-10-03: version 1.19.4 updated the command version and referenced the Homebrew formula. - 2025-11-11: version 1.27.0 added the `discover` package and discovery option to the `oj` application. - 2026-03-16: version 1.28.1 removed an accidental Go 1.22 dependency in `alt.Checksum()`. - 2026-07-01: Homebrew's formula API reported stable version 1.28.1 for `oj`. ### Related projects - OjG is related to Ohler's Ruby `Oj`, C `OjC`, Ruby XML parser `Ox`, and web-server projects such as Agoo. It is also related to the IETF JSONPath work and to Go JSON parser comparison projects. ### Sources - - - - - - - - ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** oj - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** head, stable ## Related links - [Source-control packages](https://www.automicvault.com/pkg/source-control-tools/) - Belongs to a source-control command family. - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Language runtime packages](https://www.automicvault.com/pkg/language-runtime-packages/) - Matched language runtime, compiler, or interpreter metadata. - [go](https://www.automicvault.com/pkg/brew/go/) - Build dependency declared by Homebrew. - [miller](https://www.automicvault.com/pkg/brew/miller/) - Shares av.db curated category or tags: cli, data, go, json. - [burrow](https://www.automicvault.com/pkg/brew/burrow/) - Shares av.db curated category or tags: cli, data, go. - [cayley](https://www.automicvault.com/pkg/brew/cayley/) - Shares av.db curated category or tags: cli, data, go. - [clickhouse-sql-parser](https://www.automicvault.com/pkg/brew/clickhouse-sql-parser/) - Shares av.db curated category or tags: cli, data, go. - [conduit](https://www.automicvault.com/pkg/brew/conduit/) - Shares av.db curated category or tags: cli, data, go. - [cqlkit](https://www.automicvault.com/pkg/brew/cqlkit/) - Shares av.db curated category or tags: cli, data, json. - [distribution](https://www.automicvault.com/pkg/brew/distribution/) - Shares av.db curated category or tags: cli, data, visualization. - [dsq](https://www.automicvault.com/pkg/brew/dsq/) - Shares av.db curated category or tags: cli, data, json. ## Combined YAML source View the package source record on GitHub. [combined/oj.yml](https://github.com/automic-vault/db/blob/main/combined/oj.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - cross-ecosystem install command graph