Sigma Prime audits smart contracts, zero-knowledge systems, blockchain infrastructure, and off-chain code, and publishes security research.
Scribble vs FailSafe
How do Scribble and FailSafe compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | Scribble | FailSafe |
|---|---|---|
| What it is | Scribble instruments Solidity code for runtime verification and property-based testing. | FailSafe builds continuous security testing systems that probe applications, APIs, infrastructure, and AI systems for exploitable issues. |
| Website | ||
| Type | Open-source project | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Not recorded | Web |
| Open source | Yes | Not stated |
| Language | English | English |
| Alternatives |
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Sites similar to both Scribble and FailSafe.
Three Sigma audits blockchain code and DeFi systems, reporting security findings and services for Web3 projects.
Anvil runs a local Ethereum node for development and testing, with in-memory execution, funded accounts, instant mining, and chain forking.
eth-tester provides a suite of tools for testing Ethereum applications, according to its repository description.
OtterSec audits blockchain systems, including layer-one networks, wallets, DeFi protocols, bridges, and related infrastructure.
Each Ethernaut level requires hacking a smart contract in the Ethereum Virtual Machine through a Web3 and Solidity wargame.





