diff --git a/README.md b/README.md
index 0dea8aaab..34d13e740 100644
--- a/README.md
+++ b/README.md
@@ -158,3 +158,14 @@ Currently, the **Time Graph Tooltip** is populated when selecting a state in a T
 * [_Sign-off:_](https://git-scm.com/docs/git-commit#Documentation/git-commit.txt---signoff) Use your full name and a long-term email address. This certifies that you have written the code and that, from a licensing perspective, the code is appropriate for use in open-source.   
 * [How to format the message](https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)
 
+## Related code
+This trace viewer depends on code from several other repos. Sometimes resolving issues in the trace viewer repo requires making changes in these code bases:
+
+| Project | Description | Related issues  | Links |
+|---------------|----|--------------------------|---|
+| [Theia](https://theia-ide.org/) | Theia is a framework for making custom IDEs. It provides reusable components (ex. Text editor, terminal, etc.) and is extensible. For example, this trace viewer is an extension for Theia-based IDEs. | | [Code](https://github.com/eclipse-theia/theia), [Ecosystem](https://github.com/theia-ide) |
+| [Trace Compass](https://www.eclipse.org/tracecompass/) | Trace analysis tool and precursor to this trace viewer. | [label:"Trace Compass"](https://github.com/theia-ide/theia-trace-extension/labels/Trace%20Compass) | [Dev info](https://wiki.eclipse.org/Trace_Compass), [Dev setup](https://wiki.eclipse.org/Trace_Compass/Development_Environment_Setup) |
+| [Trace Compass Server](https://download.eclipse.org/tracecompass.incubator/trace-server/rcp/?d) | A reference implementation of a Trace Server. Manages and analyzes trace files and provides this data to the trace viewer over the [Trace Server Protocol (TSP)](https://github.com/theia-ide/trace-server-protocol). This Trace Server implementation was originally part of Trace Compass so it requires the same dev setup. Because a protocol is used for communication (TSP), it is possible to develop alternative Trace Servers that are independent of Trace Compass. | [label:"Trace Server"](https://github.com/theia-ide/theia-trace-extension/labels/Trace%20Server) | [Dev setup](https://wiki.eclipse.org/Trace_Compass/Development_Environment_Setup) (same as Trace Compass), [Code](https://git.eclipse.org/r/admin/repos/tracecompass.incubator/org.eclipse.tracecompass.incubator) (same repo as Trace Compass incubator) |
+| [Trace Server Protocol (TSP)](https://github.com/theia-ide/trace-server-protocol) | Protocol used by the trace viewer to communicate with the trace server. | [label:"trace server protocol"](https://github.com/theia-ide/theia-trace-extension/labels/trace%20server%20protocol) |
+| [Client-side Trace Server Protocol implementation](https://github.com/theia-ide/tsp-typescript-client) | A client-side implementation of the Trace Server Protocol. Allows the trace viewer to communicate with the server. |  |   |
+| [Timeline Chart](https://github.com/theia-ide/timeline-chart) | Implements the Gantt charts used in this trace viewer.  | [label:timeline-chart](https://github.com/theia-ide/theia-trace-extension/labels/timeline-chart) |   |