The most comprehensive list of searchable accessible websites last updated on Sep 1 2023. Stats collected from various trackers included with free apps.
The Hypertext d20 SRD (v3.5, 5e & Pathfinder d20 System Reference Document) :: d20srd.org Contains the entire v3.5 & 5e d20 System Reference Document and is fully indexed, hyperlinked, searchable, and accessible.
3Play Media – Video Captioning, Transcription, Audio Description, Subtitling Closed captioning, transcription, audio description, & subtitling solutions that make your videos accessible, searchable, SEO-friendly, and more engaging.
Mattermost is an open source, self-hosted Slack-alternative Mattermost brings all your team communication into one place, making it searchable and accessible anywhere.