# Straw poll - addon + theme compatibility with v9

**URL:** https://forums.concretecms.org/t/straw-poll-addon-theme-compatibility-with-v9/1261
**Category:** Marketplace
**Created:** [October 13, 2021, 12:13pm UTC](https://forums.concretecms.org/t/straw-poll-addon-theme-compatibility-with-v9/1261 "2021-10-13T12:13:36Z")
**Posts on this page:** 1
**Showing post:** 20

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### Author: ![JohntheFish](https://forums.concretecms.org/user_avatar/forums.concretecms.org/johnthefish/32/3767_2.png) [@JohntheFish](https://forums.concretecms.org/u/JohntheFish)
#### Post date: [October 21, 2021, 12:18pm UTC](https://forums.concretecms.org/t/straw-poll-addon-theme-compatibility-with-v9/1261/20 "2021-10-21T12:18:53Z")

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> [@mesuva](#):
>
> Have the most installed, say, 30 add-ons from the marketplace been tested to work correctly on V9?

+1 for that as a test. A set of test sites with the most popular (free and paid) addons & themes needs to be maintained and tested against every core upgrade. It would also be a good test of @frz’s new containerized quick spin-up hosting package, so serving multiple purposes.

(I expect some of the free addons/themes with most downloads would be buggy even on v8.5.6)

It doesn’t take an experienced developer to do such a test. Developer experience is only needed to analyze when the test fails.

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