Protobuf Global Extension Registry

This file contains a global registry of known extensions for descriptor.proto, so that any developer who wishes to use multiple 3rd party projects, each with their own extensions, can be confident that there won't be collisions in extension numbers.

If you need an extension number for your custom option (see custom options), please send us a pull request to add an entry to this doc, or create an issue with info about your project (name and website) so we can add an entry for you.

Existing Registered Extensions

1. C# port of protocol buffers

   • Website: https://github.com/jskeet/protobuf-csharp-port
   • Extensions: 1000

2. Perl/XS port of protocol buffers

   • Website: http://code.google.com/p/protobuf-perlxs
   • Extensions: 1001

3. Objective-C port of protocol buffers

   • Website: http://code.google.com/p/protobuf-objc
   • Extensions: 1002

4. Google Wave Federation Protocol open-source release (FedOne)

   • Website: http://code.google.com/p/wave-protocol
   • Extensions: 1003

5. PHP code generator plugin

   • Website: ???
   • Extensions: 1004

6. GWT code generator plugin (third-party!)

   • Website: http://code.google.com/p/protobuf-gwt/
   • Extensions: 1005

7. Unix Domain RPC code generator plugin

   • Website: http://go/udrpc
   • Extensions: 1006

8. Object-C generator plugin (Plausible Labs)

   • Website: http://www.plausible.coop
   • Extensions: 1007

9. TBD (code42.com)

   • Website: ???
   • Extensions: 1008

10. Goby Underwater Autonomy Project

    • Website: https://github.com/GobySoft/goby
    • Extensions: 1009

11. Nanopb

    • Website: http://kapsi.fi/~jpa/nanopb
    • Extensions: 1010

12. Bluefin AUV Communication Extensions

    • Website: http://www.bluefinrobotics.com
    • Extensions: 1011

13. Dynamic Compact Control Language

    • Website: http://github.com/GobySoft/dccl
    • Extensions: 1012

14. ScaleOut StateServer® Native C++ API

    • Website: http://www.scaleoutsoftware.com
    • Extensions: 1013

15. FoundationDB SQL Layer

    • Website: https://github.com/FoundationDB/sql-layer
    • Extensions: 1014

16. Fender

    • Website: https://github.com/hassox/fender
    • Extensions: 1015

17. Vortex

    • Website: http://www.prismtech.com/vortex
    • Extensions: 1016

18. tresorit

    • Website: https://tresorit.com/
    • Extensions: 1017

19. CRIU (Checkpoint Restore In Userspace)

    • Website: http://criu.org/Main_Page
    • Extensions: 1018

20. protobuf-c

    • Website: https://github.com/protobuf-c/protobuf-c
    • Extensions: 1019

21. ScalaPB

    • Website: https://scalapb.github.io/
    • Extensions: 1020

22. protoc-gen-bq-schema

    • Website: https://github.com/GoogleCloudPlatform/protoc-gen-bq-schema
    • Extensions: 1021

23. grpc-gateway

    • Website: https://github.com/gengo/grpc-gateway
    • Extensions: 1022

24. Certificate Transparency

    • Website: https://github.com/google/certificate-transparency
    • Extensions: 1023

25. JUNOS Router Telemetry

    • Website: http://www.juniper.net
    • Extensions: 1024

26. Spine Event Engine

    • Website: https://github.com/SpineEventEngine/core-java
    • Extensions: 1025

27. Aruba cloud platform

    • Website: ???
    • Extensions: 1026 -> 1030

28. Voltha

    • Website: ???
    • Extensions: 1031 -> 1033

29. gator

    • Website: ???
    • Extensions: 1034

30. protoc-gen-flowtypes

    • Website: https://github.com/tmc/grpcutil/tree/master/protoc-gen-flowtypes
    • Extensions: 1035

31. ProfaneDB

    • Website: https://gitlab.com/ProfaneDB/ProfaneDB
    • Extensions: 1036

32. protobuf-net

    • Website: https://github.com/mgravell/protobuf-net
    • Extensions: 1037

33. FICO / StreamEngine

    • Website: http://www.fico.com/
    • Extensions: 1038

34. GopherJS

    • Website: https://github.com/johanbrandhorst/protobuf
    • Extensions: 1039

35. ygot

    • Website: https://github.com/openconfig/ygot
    • Extensions: 1040

36. go-grpcmw

    • Website: https://github.com/MarquisIO/go-grpcmw
    • Extensions: 1041

37. grpc-gateway protoc-gen-swagger

    • Website: https://github.com/grpc-ecosystem/grpc-gateway
    • Extensions: 1042

38. AN Message

    • Website: TBD
    • Extensions: 1043

39. protofire

    • Website: https://github.com/ribrdb/protofire
    • Extensions: 1044

40. Gravity

    • Website: https://github.com/aphysci/gravity
    • Extensions: 1045

41. SEMI Standards – I&C Technical Committee

    • Website: http://downloads.semi.org/web/wstdsbal.nsf/9c2b317e76523cca88257641005a47f5/88a5863a580e323088256e7b00707489!OpenDocument
    • Extensions: 1046

42. Elixir plugin

    • Website: https://github.com/tony612/grpc-elixir
    • Extensions: 1047

43. API client generators

    • Website: ???
    • Extensions: 1048-1056

44. Netifi Proteus

    • Website: https://github.com/netifi-proteus
    • Extensions: 1057

45. CGSN Mooring Project

    • Website: https://bitbucket.org/ooicgsn/cgsn-mooring
    • Extensions: 1058

46. Container Storage Interface

    • Website: https://github.com/container-storage-interface/spec
    • Extensions: 1059-1069

47. TwirpQL Plugin

    • Website: https://twirpql.dev
    • Extensions: 1070

48. Protoc-gen-validate

    • Website: https://github.com/envoyproxy/protoc-gen-validate
    • Extensions: 1071

49. Protokt

    • Website: https://github.com/open-toast/protokt
    • Extensions: 1072

50. Dart port of protocol buffers

    • Website https://github.com/dart-lang/protobuf
    • Extensions: 1073

51. Ocaml-protoc-plugin

    • Website: https://github.com/issuu/ocaml-protoc-plugin
    • Extensions: 1074

52. Analyze Re Graphene

    • Website: https://analyzere.com
    • Extensions: 1075

53. Wire since and until

    • Website: https://square.github.io/wire/
    • Extensions: 1076, 1077

54. Bazel, Failure Details

    • Website: https://github.com/bazelbuild/bazel
    • Extensions: 1078

55. grpc-graphql-gateway

    • Website: https://github.com/ysugimoto/grpc-graphql-gateway
    • Extensions: 1079

56. Cloudstate

    • Website: https://cloudstate.io
    • Extensions: 1080-1084

57. SummaFT protoc-plugins

    • Website: https://summaft.com/
    • Extensions: 1085

58. ADLINK EdgeSDK

    • Website: https://www.adlinktech.com/en/Edge-SDK-IoT
    • Extensions: 1086

59. Wire wire_package

    • Website: https://square.github.io/wire/
    • Extensions: 1087

60. Confluent Schema Registry

    • Website: https://github.com/confluentinc/schema-registry
    • Extensions: 1088

61. ScalaPB Validate

    • Website: https://scalapb.github.io/docs/validation
    • Extension: 1089

62. Astounding (Currently Private)

    • Website: https://github.com/PbPipes/Astounding
    • Extension: 1090

63. Protoc-gen-psql

    • Website: https://github.com/Intrinsec/protoc-gen-psql
    • Extension: 1091-1101

64. Protoc-gen-sanitize

    • Website: https://github.com/Intrinsec/protoc-gen-sanitize
    • Extension: 1102-1106

65. Coach Client Connect (planned release in March 2021)

    • Website: https://www.coachclientconnect.com
    • Extension: 1107

66. Kratos API Errors

    • Website: https://go-kratos.dev
    • Extension: 1108

67. Glitchdot (Currently Private)

    • Website: https://go.glitchdot.com
    • Extension: 1109

68. eigr/protocol

    • Website: https://eigr.io
    • Extension: 1110-1114

69. Container Object Storage Interface (COSI)

    • Website: https://github.com/kubernetes-sigs/container-object-storage-interface-spec
    • Extension: 1115-1124

70. Protoc-gen-jsonschema

    • Website: https://github.com/chrusty/protoc-gen-jsonschema
    • Extension: 1125-1129