Dev tools · alternatives · 2026

24 alternatives to Chain49 Blockchain API

Blockchain-as-a-Service - Kickstart your next crypto project

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Chain49 Blockchain API launched in 2023; newer entries below may have overtaken it.

1
Chain▲125
The Block Chain API for Developers
2014 · chain.com · its alternatives →
2
Alchemy▲187
Blockchain development made easy
2020 · alchemy.com · its alternatives →
3
GetBlock▲88
API access to 40+ full blockchain nodes (BTC, ETH, BSC)
2021 · getblock.io · its alternatives →
4
Blockchain as a Service by Microsoft▲278
Develop, test, and deploy blockchain applications
2017 · azure.microsoft.com · its alternatives →
5
fetchchain▲88
Turn smart contracts into APIs with no code
2023 · its alternatives →
6
Blockchain Jobs from BlockRepublic▲155
450+ blockchain jobs to apply to in one place
2017 · blockrepublic.io · its alternatives →
7
Horizon 1.0▲312
Realtime, open-source backend for JavaScript apps
2016 · sequence.xyz · its alternatives →
8
NFT Claim API▲127
NFT APIs for free claims, gaming, rewards, and more
2023 · its alternatives →
9
Very basic blockchain-free cryptocurrency PoC in Python▲171
Very basic blockchain-free cryptocurrency PoC in Python - spipm/crackcoin
2017 · github.com · its alternatives →
10
Carbon▲86
Buy Cryptocurrency Instantly using Credit/Debit
2019 · its alternatives →
11
x402▲119
Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to settle. 90 second demo: https://www.youtube.com/watch?v=PV-L2AfLhJg Problem: Every time we want to use a new API we have to: find the service online create a developer account, copy a secret key into env vars, pre-fund or…
2025 · x402.org · its alternatives →
12
Maki▲84
An efficient AI coding agent. Native Rust TUI. Immediate startup, 60 FPS, low memory. Indexes files instead of reading them, chains tools in a sandbox interpreter. Anthropic, OpenAI, Google, Z.AI, OpenRouter, Synthetic, or any OpenAI / Anthropic compatible API.
2022 · maki.sh · its alternatives →
13
Crypto APIs▲10
Blockchain development infrastructure layer
2019 · cryptoapis.io · its alternatives →
14
Covalent▲97
One stop shop for blockchain data through a unified API
2021 · covalenthq.com · its alternatives →
15
Chainkit from PencilDATA▲69
Add blockchain integrity to your data and apps in 5 minutes
2018 · its alternatives →
16
0xcert Framework▲93
Powerful dapps made easy 👨‍💻
2019 · its alternatives →
17
1550+ #Blockchain #Crypto Jobs▲26
Google sheet with a list of 1550+ #Blockchain #Crypto jobs
2018 · docs.google.com · its alternatives →
18
Assembly Coins▲79
Create your own Cryptocurrency on the Bitcoin blockchain
2014 · its alternatives →
19
AlleoChain▲66
Platform to launch and scale blockchain applications
2020 · alleochain.io · its alternatives →
20
Python Library for Chain.com Bitcoin API▲12
Integration library for the https://chain.com API. - thesis/chain-bitcoin-python
2014 · github.com · its alternatives →
21
Stronghold Platform APIs▲70
A digital wallet in every pocket
2018 · its alternatives →
22
Dumbest AI + Blockchain Project in 100 lines▲52
the purest AI + Blockchian project. Contribute to theDumbAssCoin/DUMBASS development by creating an account on GitHub.
2019 · github.com · its alternatives →
23
BLOCKSDK▲1
Blockchain Cryptocurrency APIs,Blockchain Cryptocurrency SDK
2020 · blocksdk.com · its alternatives →
24
BlockPool▲22
Directory of 200+ blockchain resources for beginner
2021 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →