Ethereum smart contracts can be fuzzed with Echidna, whose repository describes it as a fuzzer.
Open source
24 alternativesEth Tester
eth-tester provides a suite of tools for testing Ethereum applications, according to its repository description.
About Eth Tester
Eth Tester is a Python library for testing Ethereum applications. It provides an EthereumTester object used in code to work with test accounts, balances, transactions by hash, and transaction receipts.
It enforces strict input and output formats for hexadecimal values, 32-byte hashes, EIP-55 checksummed addresses, and integer numeric values, and accepts 'latest' and 'pending' for block_number parameters.
Key features
- Create EthereumTester instance in Python code
- Retrieve test accounts and check balances
- Send transactions and retrieve transaction receipts
- Look up transactions by hash
- Validate mixed-case addresses as EIP-55 checksummed addresses
- Use 'latest' and 'pending' as block number values
Best for: Python developers who test Ethereum applications in code.
Good for
- Open source Python library
- Installs with pip
- Documents expected input and output data formats
Eth Tester at a glance
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Eth Tester FAQ
How do I install eth-tester?
Run: python -m pip install eth-tester
How do I create a tester instance?
Use: from eth_tester import EthereumTester, then t = EthereumTester()
Which block_number values are accepted?
'latest' for the latest mined block and 'pending' for the current un-mined block.
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