Free tier only
Free Alternatives to ListOfBooks API (2026)
ListOfBooks API has a free tier, but if it does not fit, Here are 6 API & Backend tools you can start using for free, ranked by how closely they match ListOfBooks API, with what each charges once you outgrow the free plan.
Closest free matches
Ranked by shared use cases, audience and stack with ListOfBooks API. Every tool here lists a free plan.

Orisift checks phone numbers, email domains, IP addresses and domains through one POST /v1/lookup endpoint and returns a verdict with its evidence.
Eclipse GlassFish is an open source application server from the Eclipse Foundation that implements the Jakarta EE platform; GlassFish 8.0 implements Jakarta EE 11.
ReefAPI is one gateway to 250+ live web-data APIs: e-commerce, social, real estate, jobs, travel, news, finance and company data. Clean JSON, free tier.

Open source LLM gateway that exposes models from OpenAI, Anthropic, Google, DeepSeek and more through one OpenAI compatible API key.
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Free alternatives to ListOfBooks API: FAQ
Quick answers to common questions
Is ListOfBooks API free?
Yes, ListOfBooks API offers a free tier. The tools below are alternatives that are also free to start.
What is the best free alternative to ListOfBooks API?
Orisift is the closest free match by shared use cases, audience and stack. Eclipse GlassFish, ReefAPI and UnoRouter are the next closest.
How were these free alternatives to ListOfBooks API chosen?
Tools are ranked by similarity to ListOfBooks API (shared use cases, target audience, tech stack and pricing model) and filtered to those whose listing shows a free tier, freemium plan or open-source edition. Where fewer than 2 close matches exist, popular free API & Backend tools fill the list and are labelled as such.
Building a free API & Backend tool?
List it free. Tools with a free tier appear on pages like this one.
