Chrome //
Extensions 
Chrome
Web store
select chrome_id_no,plugin_tag_line,plugin_name,plugin_icon,sitemap_url,oldvsnew_comment from final_chrome_totaldata_sept2022 where MATCH(plugin_name) AGAINST('+source +viewer' IN Boolean MODE) order by users desc
Chrome extension source viewer
View source code of Chrome extensions, Firefox addons or Opera extensions (crx/nex/xpi) from the Chrome web store and elsewhere.
Night Viewer - Dark mode for view page source
Night Viewer enables dark mode for the View Page Sources, structures and formats the code to make it more readable
Chrome extension source viewer
Adds button to show the source code of a Chrome extension (crx file) in the Chrome web store (and elsewhere if wanted)
Now Source Viewer
Detects public Now sites and offers a handy way to view the site's source code on Zeit.