Alternatives
Best Knock alternatives in 2026
Data compiled by Toolradar Updated How we rate
Cite this list: Toolradar, best Knock alternatives 2026, toolradar.com/alternatives/knock
6 direct alternatives to Knock, compared on pricing, features, and best-for use cases. Pick the right replacement without the marketing fluff.
Quick answer
- HubSpot is the top alternative to Knock on our list, followed by Braze and Customer.io.
- 1 of the 6 alternatives has a free plan, starting with Leanplum.
- Highest rated: Customer.io, 4.5 out of 5 from 988 ratings, Sep 2026.
- 6 alternatives
- 1 with a free plan
Top 3 alternatives to Knock
HubSpot
#1 Top pickCRM platform for scaling businesses
Starting price
From $7 /mo
Cheapest paid plan, monthly, as of November 2026
3.9 /5 across Trustpilot, TrustRadius, PeerSpot and more · 19,150 ratings, Sep 2026
Our take
Best overall
Braze
#2Customer engagement platform for cross-channel campaigns
Pricing
Contact sales
4.4 /5 across SourceForge and G2 · 1,806 ratings, Sep 2026
Customer.io
#3Automated messaging based on user behavior
Starting price
From $100 /mo
Cheapest paid plan, monthly, as of November 2026
4.5 /5 across G2 and Capterra · 988 ratings, Sep 2026
Our take
Highest rated
Knock vs 6 alternatives
| Tool | Starting price (Nov 2026) | Free plan | Rating |
|---|---|---|---|
 | Price: $250/mo | Free plan: Yes | 4.6 out of 5, from 148 ratings on G2 (148) |
| Price: $7/mo | Free plan: No | 3.9 out of 5, from 19,150 ratings across Trustpilot, TrustRadius, PeerSpot and more (19,150) |
| Price: Contact sales | Free plan: No | 4.4 out of 5, from 1,806 ratings across SourceForge and G2 (1,806) |
| Price: $100/mo | Free plan: No | 4.5 out of 5, from 988 ratings across G2 and Capterra (988) |
 | Price: Contact sales | Free plan: No | 4.5 out of 5, from 523 ratings on G2 (523) |
 | Price: Contact sales | Free plan: No | 4.4 out of 5, from 887 ratings across G2 and Capterra (887) |
 | Price: Free + paid | Free plan: Yes | 4.2 out of 5, from 106 ratings across G2 and Capterra (106) |
Why people consider alternatives to Knock
Knock is a customer engagement infrastructure designed for product-led growth, allowing businesses to send product, marketing, and transactional messaging across various channels.
Teams most often switch away when one of these starts to bite:
- Pricing at scale as usage or premium tiers add up.
- Missing integrations with the rest of your stack.
- Performance or scale limits as your needs grow.
- A specific feature gap you have hit in marketing automation.
The 6 alternatives below cover the same core job (marketing automation) with different trade-offs.
Knock by the numbers
| Metric | Knock | Peer median | Position (1 is best) |
|---|---|---|---|
| Free plan | Yes | 12 of 16 have one | n/a |
| Listed as an alternative to | 3 tools | 3 | #8 of 16 (joint) |
| User rating | 4.6/5 (across the web, 148 ratings) | 4.5/5 | #3 of 11 (joint) tools with 20+ reviews |
Listed as an alternative to: #8 on 2026-10-16 to #8 on 2026-11-02 (rank among 16 tools, 1 is best).
Each position is counted among the tools that have data for that row, as noted under it. All Push Notifications data · How we compute this. Advertising and placement fees are not inputs to any position.
Cite this: Toolradar, “Knock by the numbers”, Nov 2026.
Marketing Automation leaderboards from Toolradar data
Toolradar ranks Marketing Automation tools on one measure at a time, only where at least 8 tools have data. As of Nov 2026.
Lowest entry price, plans with no stated unit
Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.
Counted among 142 tools with no stated price unit, verified price.
| # | Tool | Entry plan |
|---|---|---|
| 1 | LadderFlow | $1.58/mo, billed yearly |
| 2 | Repostit | $4/mo, billed yearly |
| 3 | HubSpot | $7/mo, billed monthly |
| 3 | Moosend | $7/mo, billed monthly |
| 5 | Multilogin | $7.08/mo, billed yearly |
Lowest entry price, flat team plans
Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.
Counted among 16 tools priced as a flat team plan, verified price.
| # | Tool | Entry plan |
|---|---|---|
| 1 | Mailerlite | $12/mo flat, billed monthly |
| 2 | Aweber | $15/mo flat, billed monthly |
| 2 | Feedhive | $15/mo flat, billed monthly |
| 4 | SocialDesk | $19/mo flat, billed monthly |
| 5 | Privy | $24/mo flat, billed monthly |
Lowest entry price, per-user plans
Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.
Counted among 11 tools priced per user, verified price.
| # | Tool | Entry plan |
|---|---|---|
| 1 | Nutshell | $13/user/mo, billed monthly |
| 2 | EngageBay | $14.99/user/mo, billed monthly |
| 3 | Top Producer | $25/user/mo, billed monthly |
| 4 | Insightly | $29/user/mo, billed monthly |
| 5 | Act! | $30/user/mo |
A position exists only when at least 8 tools have data for that metric. 169 of 357 Marketing Automation tools have a verified price; the others publish none we could read (often "contact sales"). Advertising and placement fees are not inputs to any position. Visit counts include visits from every source. How we compute this. Cite this: Toolradar, “Marketing Automation leaderboards”, Nov 2026. Data licensed CC BY 4.0. All Marketing Automation statistics.
6 alternatives to Knock
Ranked by G2 and Capterra ratings, media mentions, and editor review, plus how directly they replace Knock.
- 1
HubSpot
Paid Battle-tested at scaleCRM platform for scaling businesses
3.9 /5 across Trustpilot, TrustRadius, PeerSpot and more · 19,150 ratings, Sep 2026
From $7/mo, billed monthly
- 2
Braze
Contact Battle-tested at scaleCustomer engagement platform for cross-channel campaigns
4.4 /5 across SourceForge and G2 · 1,806 ratings, Sep 2026
Price not published
- 3
Customer.io
PaidAutomated messaging based on user behavior
4.5 /5 across G2 and Capterra · 988 ratings, Sep 2026
From $100/mo, billed monthly
- 4
MoEngage
PaidInsights-led customer engagement platform
4.5 /5 on G2 · 523 ratings, Mar 2026
Price not published
- 5
Iterable
ContactGrowth marketing platform for cross-channel campaigns
4.4 /5 across G2 and Capterra · 887 ratings, Sep 2026
Price not published
- 6
Leanplum
Free planSupercharge customer lifetime value with an all-in-one customer engagement platform.
4.2 /5 across G2 and Capterra · 106 ratings, Sep 2026
Free plan available; paid prices not published
Frequently asked questions
What is the best alternative to Knock?
Based on real-signal scoring (G2 and Capterra ratings, media mentions, and editorial review), the top alternatives to Knock are HubSpot, Braze, Customer.io. Each solves the same core job with different trade-offs on pricing, features, and integrations.
Is there a free alternative to Knock?
There is no fully free alternative in this list. Leanplum is freemium: a permanent free tier plus paid plans (Supercharge customer lifetime value with an all-in-one customer engagement platform).
Why do people look for Knock alternatives?
Common reasons teams switch away from Knock: pricing that scales aggressively, missing integrations with the rest of their stack, performance or scale limits, or a specific feature gap in marketing automation. The alternatives on this page solve the same core problem with different trade-offs.
Side-by-side comparisons
In-depth comparison pages for Knock versus each alternative.
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