diff --git a/README.md b/README.md
index cf67edc3..99c54534 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,42 @@
-# Reference implementation of the indy-agent
+# Indy Agents
 
-This repository is focused on reference agents and associated tools.
+Agents come in all varieties. Some are simple and static; these
+might be appropriate for IoT use cases that are hard-wired for
+a single connection. Others are complex and cloud-based, suitable
+for enterprise use. Still others run on mobile devices for
+individual users. For more information about general agent theory
+or about agent categories, see the [Agents Explainer HIPE](
+https://github.com/hyperledger/indy-hipe/blob/4696f162/text/0002-agents/README.md).
+
+This repo contains a handful of reference agents. To run them,
+you must have a build of libindy plus a running ledger.  If you
+are just trying them out, we recommend [running a ledger locally
+using docker](https://github.com/hyperledger/indy-sdk/blob/master/docs/ubuntu-build.md).
+See the README in each implementation directory for more
+details.
+
+The repo also has some useful tools for agent developers--especially
+a test suite that can exercise agent interoperability.
+
+## Known Agent Implementations
+
+The following agents are known to the general community. If you
+would like to list your agent here, please submit a pull request.
+
+|Name|Source|Use Cases|Interop Results from Test Suite|More Info|
+|----|------|---------|-------------------------------|---------|
+|python ref agent|community / Sovrin Foundation (see github contributors)|cloud (web-based)|not yet published on the web, but 100% passed in Feb 2019|see [python/README.md](python/README.md) in this repo|
+|node.js ref agent|community / BYU (see github contributors)|cloud (web-based)|not yet tested|see [nodejs/README.md](nodejs/README.md) in this repo|
+|Sovrin Connector|Sovrin Foundation|mobile app (assumes cloud support)|not yet tested|[github.com/ sovrin-foundation/ connector-app](https://github.com/sovrin-foundation/connector-app)|
+|IndyCat|Government of British Columbia|cloud for institutions (besides agent, includes framework for general SSI features in agents)|not yet published on the web, but X% passed in Feb 2019|[github.com/ bcgov/ indy-catalyst/](https://github.com/bcgov/indy-catalyst/tree/master/agent)|
+|StreetCred|StreetCred|commercial mobile app + .NET framework for agents of all types|not yet published on the web, but X% passed in Feb 2019|[github.com/ streetcred-id/ agent-framework](https://github.com/streetcred-id/agent-framework)|
+|Verity|Evernym|commercial enterprise agent, focused on credential issuance and proving for login and onboarding|not yet tested|[evernym.com](https://evernym.com)|
+|Connect.Me|Evernym|commercial mobile agent for individuals (free but requires SaaS subscription for supporting cloud agent)|not yet tested|Android or iOS App Store|
+
+## Related Topics
 
 If you are interested in developing indy-sdk,
-please visit the [indy-sdk repository](https://github.com/hyperledger/indy-sdk/) and follow the getting started guide there.
+please visit the [indy-sdk repository](https://github.com/hyperledger/indy-sdk/)
+and follow the Getting Started Guide there.
 
-In order to run any of the reference implementations, you must have libindy built and have a running ledger.  If you are just trying it out, we recommend [running a ledger locally using docker](https://github.com/hyperledger/indy-sdk/blob/master/docs/ubuntu-build.md).
 
-See the README in each implementation directory for more specific details.
\ No newline at end of file