Is Clay cheaper than Atrium?

For most accounts under typical category usage, the answer depends on tier. Clay is in the free band (Free), while Atrium is freemium (Free trial). At parity scale, the cheaper option can save 30–60% — but feature-for-feature swaps usually narrow the gap above the second tier.

Why isn't every option on this list?

This page surfaces 12 alternatives ranked by blended score. Apps just outside the top-12 typically have lower feature similarity (under 40%), thinner listings (audit under 65), or have flagged review-quality issues. If you have a specific app in mind, check the full Slack catalog for its profile.

How is the ranking built?

Three signals, weighted: feature similarity (45%) from N-gram match against Atrium's feature signature, audit + rating (35%) blending listing quality with rolling 90-day rating, and review velocity (20%) tracking 30-day review additions normalized by category baseline. We don't accept paid placement and we publish the rules so you can audit them yourself.

When was this ranking last updated?

This page rebuilds daily. Source data — Atrium's listing and the 12 alternatives' listings — is scraped every 24 hours. Audit scores re-run on the same cadence. If a rating shifts more than 0.05★ overnight, that's a real change in the marketplace, not a model artifact.

Can I track Atrium alongside its alternatives in AppRanks?

Yes — that's the dashboard product. Add up to 12 competitors to any app you track, and AppRanks will surface daily ranking deltas, ad activity, keyword overlap, and rating-curve divergence. The free tier covers 1 app + 3 competitors. Try free →

Slack Marketplace

Alternatives to Atrium

If Atrium isn't the right fit, here are 12 Slack apps to look at next, ranked by audit score, rating, and review velocity. Daily-refreshed, no vendor money.

Neutrally ranked · No vendor sponsorship

Rankings refreshed Aug 3, 2026

See Atrium's profile Audit Atrium's listing

	YOU'RE LEAVING Atrium #1 in Enterprise-ready apps	TOP PICK Clay #1 in Productivity	RANK #2 Math #2 in Productivity	RANK #3 UPSIDER #3 in Productivity
Average rating	—	—	—	—
Review count	0	0	0

Alternatives to Atrium

Three you should evaluate first.

Clay

Math

UPSIDER

Atrium versus the top 3.

Atrium

Clay

Math

UPSIDER

The next 9, denser.

9 more Slack alternatives to Atrium

How these alternatives are ranked

Four reasons people leave.

Pricing has outgrown your usage

You need a feature outside the focus

Support response has slowed you down

Your scale has changed since you picked

Answers built from the data.

Continue your research

Audit Atrium's listing

Atrium vs Clay

Slack category leaders