THE FREE TIER LEDGER, subscriber download from AI Review Rating
https://aireviewrating.com/free-tier-ledger

1,304 developer services that offer a free tier, in 57 categories.
Data read on 2026-09-07. Every time-sensitive column names that date in its header.

WHAT EACH COLUMN IS
service, website, category: from the open free-for.dev list
  (https://github.com/ripienaar/free-for-dev), snapshot of 2026-09-07.
vendor_description: the vendor's own site description (1,137 rows; blank where the
  vendor site gave none).
ai_related: our classifier on the vendor's own text. Yes for 247 rows.
open_source: Yes = a GitHub repo we confirmed belongs to the product; Likely = the list says
  so but we could not confirm a repo; SDK/client = only a client library is open.
github_repo, stars, licence, repo_archived: read from GitHub on 2026-09-07 (306 rows).
first_paid_price: the cheapest paid step on the vendor's pricing page, kept only when a
  billing period (/mo, /user, /yr) was printed beside it (584 rows). Read
  automatically, not by hand: open pricing_page before you buy.
airr_score_out_of_10, airr_review: our review page for the 29 services we also
  review, and our score where one is published (28 rows). A blank score means not
  matched or not yet scored, never a zero.
site_reachable: whether the vendor site answered on 2026-09-07 (32 did not).

WHAT IS NOT IN HERE
The free tier limits themselves. Those change often and the wording in the source list is
its authors' own, so each row links the vendor's pricing page instead. The Monday digest
reports the price changes we verify on the tools we review.

Nobody pays to appear in this sheet. It is free to use; a link back is appreciated.
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