Big fan of BlockSurvey and what Wilson and the team are doing. BlockSurvey was the first end-to-end encrypted product I signed up for and I love the UI, privacy, responsiveness, and transparency behind the platform. Great job all 'round and awesome to see it keep evolving.
Why BlockSurvey is a Strong LimeSurvey Alternative
Why Teams Are Leaving LimeSurvey
A dated, complex interface. G2 and Capterra reviewers consistently flag it as unintuitive and, at times, buggy compared to modern survey tools
The genuinely free option means self-hosting: you're responsible for installing, maintaining, and security-patching your own PHP/MySQL server
Recent vulnerability disclosures, an unauthenticated remote-code-execution flaw (CVE-2025-56422) and a related medium/high-severity cluster, were only patched in version 6.15.0, which left unpatched self-hosted instances exposed in the meantime
Cloud plan response caps are tight
as low as 25 responses/month on the free plan and around 1,000/month on the entry paid tier, pushing active users to upgrade quickly
Email and priority support are withheld entirely from the free Cloud plan
BlockSurvey vs LimeSurvey: Feature Comparison
See how BlockSurvey stacks up against LimeSurvey with this detailed feature comparison. Equip yourself with an intuitive and AI-powered tool for easy survey creation with BlockSurvey.
Pros & Cons
- End-to-end encryption on responses, so even BlockSurvey can't read your data
- No-code, drag-and-drop builder with white-label branding
- AI-powered survey creation and analysis built in
- No server to install, patch, or maintain
- Not open-source, so you can't inspect or self-host the codebase
- Cloud-only today, unlike LimeSurvey's self-hosted Community Edition option
- Newer platform, so its integration library is still growing
- Extensive customization and advanced logic/branching for complex, research-grade surveys
- Genuinely open-source with a free, self-hosted Community Edition
- Structured survey export/import via .lss (XML) files that preserve groups, questions, options and conditions
- Multilingual support (80+ languages) and granular access controls for academic/international use
- Steep learning curve and a UI reviewers describe as dated and sometimes buggy
- Self-hosting requires managing PHP/MySQL, updates, and security patching yourself
- Recent security disclosures, including an unauthenticated RCE (CVE-2025-56422) and a medium/high-severity cluster (CVE-2025-41074/41075/41076), patched in 6.15.0
- Cloud plan response caps are tight at entry tiers, as low as 25/month on the free plan
Best For
Teams and businesses that want a modern, no-code survey builder with end-to-end encrypted responses and AI-powered analysis, without managing servers or security patches
Academic researchers and technically capable teams who need deep branching logic and are willing to self-host for free
Our G2 and Capterra ratings are shining bright!
Testimonials
Join 500+ happy customers worldwide who are already using our amazing product.


The product itself is amazing, forms can be customised to infinity, with AMAZING designs. It has a lot of features that you haven't ever thought to be essential at some point in your life. And what's even better: support. The team is incredible.

Simple the best and most private survey tool available. There really are no competitors if you care about privacy . And you should. Great UX as well.

The Best Survey Builder that I ever used. It has a lot of features. The team is awesome, they answer every question that I have. The UX is perfect, save a lot of time building surveys. And have a conversational option to make a better experience. Block Survey is at the top of his kind!

Amazing! I have been using Blocksurvey since the day I found it. Thanks a lot for building something so useful with a great UX and keeping privacy at the core

Can't recommend enough @blocksurvey also as one of the best tools I've seen in terms of privacy, design and functions

@StacksAustraliaare serious when it comes to collecting respondents privacy and data in surveys and forms. That's why are adopting @blocksurvey.

I am a huge fan of Blocksurvey, it is a lovely tool, privacy-focused, and it probably the best alternative to Google Forms, Typeform, and so on. Keep at it. The newly introduced features sound amazing.
Secure by Design - It's for Everyone
Security isn't an afterthought for us; it's a cornerstone. BlockSurvey meets and exceeds industry-leading standards, including ISO 27001, SOC2, FERPA, HIPAA and GDPR, to keep your data safe.
