Is Party on Slack cheaper than Colla?

For most accounts under typical category usage, the answer depends on tier. Party on Slack is in the free band (Free), while Colla is paid (Paid). 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 Colla'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 — Colla'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 Colla 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 Colla

If Colla 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 Colla's profile Audit Colla's listing

	YOU'RE LEAVING Colla #1 in Social & Fun	TOP PICK Party on Slack #1 in Communication	RANK #2 GreetBot #2 in Communication	RANK #3 15Five #3 in Communication
Average rating	—	—	—	—
Review count	0	0	0

Alternatives to Colla

Three you should evaluate first.

Party on Slack

GreetBot

15Five

Colla versus the top 3.

Colla

Party on Slack

GreetBot

15Five

The next 9, denser.

9 more Slack alternatives to Colla

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 Colla's listing

Colla vs Party on Slack

Slack category leaders