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BloomRPC Extended

github.com

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Spec score 7.6 #17 of 24 in gRPC Tools

What it is

BloomRPC Extended is a free desktop GUI client for exploring and querying gRPC services on Linux, macOS, and Windows. It is a maintained fork of the original BloomRPC, which the project says was archived in January 2023. Native calls include unary, server streaming, client streaming, and bidirectional modes; gRPC-Web and server reflection are also supported. Users can import and manage .proto files, manage environments, and edit metadata. TLS and SSL connection security are available. The interface provides draggable service tabs, search and filtering, grouping by service, an overflow menu, and a close-all control. Packaged builds use CodeMirror 6 for syntax highlighting, according to the project. Downloads include macOS DMG, Windows EXE, and Linux AppImage or DEB. Homebrew and Scoop installation instructions are listed for macOS and Windows. GitHub Issues is the reported support route. The repository lists LGPL-3.0-or-later licensing; source builds require Bun v1.0 or later.

Spec sheet

Purpose
BloomRPC Extended is a graphical client for exploring and querying gRPC services.Read 3 Oct 2026 · github.com
Support
The repository links to GitHub Issues for reporting problems.Read 2 Oct 2026 · github.com
License
The repository lists its license as LGPL-3.0-or-later.Read 3 Oct 2026 · github.com
Additional protocol support
It supports gRPC-Web and server reflection.Read 3 Oct 2026 · github.com
Build requirement
Building from source requires Bun v1.0 or later, according to the README.Read 3 Oct 2026 · github.com
Call types
It supports unary, server streaming, client streaming, and bidirectional native gRPC calls.Read 3 Oct 2026 · github.com
Connection security
The README lists TLS/SSL support.Read 3 Oct 2026 · github.com
Distribution
The README describes Homebrew installation for macOS and Scoop installation for Windows, alongside GitHub releases.Read 2 Oct 2026 · github.com
Downloads
The README lists macOS .dmg, Windows .exe, and Linux .AppImage or .deb downloads through GitHub Releases.Read 3 Oct 2026 · github.com
Editor
The project says it replaced the legacy ace-builds editor with CodeMirror 6 for syntax highlighting in packaged builds.Read 3 Oct 2026 · github.com
gRPC-Web
The client supports gRPC-Web.Read 2 Oct 2026 · github.com
Lineage
It is a maintained fork of the original BloomRPC, which the project says was archived in January 2023.Read 2 Oct 2026 · github.com
Package installation
The README provides Homebrew installation instructions for macOS and Scoop instructions for Windows.Read 3 Oct 2026 · github.com
Project status
It is a maintained fork of the original BloomRPC, which the README says was archived in January 2023.Read 3 Oct 2026 · github.com
Request configuration
It supports importing and managing .proto files, environment management, and a metadata editor.Read 3 Oct 2026 · github.com
Request setup
Users can import and manage .proto files, manage environments, and edit metadata.Read 2 Oct 2026 · github.com
RPC calls
It supports native gRPC unary, server streaming, client streaming, and bidirectional calls.Read 2 Oct 2026 · github.com
Service discovery
The client supports server reflection.Read 2 Oct 2026 · github.com
Tab management
It provides draggable tabs for multiple services, with tab search, service grouping, an overflow menu, and a close-all control.Read 3 Oct 2026 · github.com
Tabs and editor
It provides draggable service tabs, tab search and filtering, grouping by service, and a CodeMirror 6 editor.Read 2 Oct 2026 · github.com

Strong points and limits

Strong points

  • Free desktop application
  • Supports all four native gRPC call types
  • gRPC-Web and server reflection
  • TLS and SSL connections
  • Runs on Linux, macOS, and Windows

Limits

  • Source builds require Bun v1.0 or later
  • Support is routed through GitHub Issues
  • Desktop deployment only
  • Original BloomRPC was archived

Who it suits

BloomRPC Extended suits developers who need a desktop interface for testing or exploring gRPC services. It is relevant to users working with native gRPC, gRPC-Web, reflection, and .proto-based requests.

Verdict

BloomRPC Extended provides a focused graphical client for gRPC calls, service discovery, and request configuration. Its cross-platform packages and maintained fork status make it a practical option for desktop-based service exploration.

Where Specifiction places it

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