GrowthBook
Match 88/100 · Free
- Open source
Enterprise experimentation platform.
Optimizely typical price: Free/yr Estimated Price checked: 2026-07-27 · Page updated 2026-08-19
Short list of the highest-ranked free and cheaper options (match score + price). Details and full ranking follow.
Ranked by closest match score, then lower price. Free options surface when they fit. How we rank: methodology · trust.
GrowthBook — often a stronger value alternative.
PostHog experiments — often a stronger value alternative.
Flagsmith — often a stronger value alternative.
| Tool | Price | Match | Est. savings vs Optimizely | Link |
|---|---|---|---|---|
| Optimizely (paid baseline) | Free/yr | — | — | |
| Free | 88/100 | — | Open | |
| Free | 85/100 | — | Open | |
| Free | 80/100 | — | Open |
We may earn a commission on some links. Approximate seed pricing — verify on vendor site CheaperThan is independent comparison content, not affiliated with Optimizely unless stated. Author: CheaperThan Editorial · Sources: public vendor pricing + catalog match notes · Methodology.
Trust & transparency · Guides · Methodology · Best free Marketing
GrowthBook is the best free alternative to Optimizely on this page (match score 88/100). GrowthBook — often a stronger value alternative. Always trial free tiers before migrating critical work.
If you want cheaper than Optimizely, start with GrowthBook (free). CheaperThan ranks by closest match plus lower price.
Optimizely is listed at about Free per year (monthly often $0 for one-time/annual licenses). Price checked 2026-07-27.
Open the comparison table — each alternative shows estimated yearly savings vs Optimizely.
Match scores estimate feature/use-case overlap, not perfection. GrowthBook scores 88/100 for Optimizely workflows. For pro production, test your real files before canceling Optimizely.
Yes — in Marketing, free options such as GrowthBook are commonly used instead of Optimizely. See also related tools in this category below and /best-free/marketing/.
We sort alternatives by match score first, then free-first when free options fit, then lower price. Paid placements (Starter/Featured/Spotlight) are labeled advertising and do not rewrite organic order. CheaperThan labels Estimated vs Verified prices, ranks by match score + price (free-first when they fit), and never invents user star reviews. See /trust/ and /methodology/.
Optimizely shows Estimated pricing (checked 2026-07-27). Approximate seed pricing — verify on vendor site Always verify on the official site before you buy or cancel. Transparency: /trust/ and /methodology/.
1) Open the top pick GrowthBook and run a real-file trial. 2) Export or migrate critical projects from Optimizely. 3) Compare feature gaps against your must-haves (match score is a guide, not a guarantee). 4) Cancel Optimizely only after you confirm the workflow. Full process notes: /trust/ and /guides/.
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