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Home/Categories/AI & Machine Learning/Scira
icon of Scira

Scira

Open source alternative to Perplexity AI, Algolia and Google Cloud Vertex AI Search

Scira is an open source AI search engine that retrieves cited, real-time answers from the web without storing your queries. A self-hostable alternative to Perplexity; MIT licensed.

11.7K starsTypeScriptAGPL-3.0Active recently
Visit websiteGitHub repo
image of Scira
Contents
  1. 01Who Scira is for
  2. 02The problem it solves
  3. 03How it solves it
  4. 04Strengths and trade-offs
  5. 05Tech stack
  6. 06FAQ
  7. 07Similar open-source tools
TL;DR

Scira is an AI search engine for builders who want source-focused answers from an inspectable AGPL-3.0 codebase. It replaces black-box answer engines such as Perplexity for developers who want to study, self-host, or adapt the search-and-answer workflow.AGPL-3.0 · TypeScript · 11.7K stars · Active recently

who it's for

Who Scira is for#

Developers studying AI search UX

Scira fits builders who want to inspect an answer engine with source presentation and search-first interaction.

Skip if:

Skip it if you need a polished managed research product for nontechnical staff.

Teams prototyping internal answer search

Teams can adapt Scira concepts for internal knowledge or public-source search experiments.

Skip if:

Use a managed enterprise search product if governance, permissions, and support are required now.

the problem

The problem it solves#

AI answer engines are useful, but closed systems hide retrieval choices, ranking behavior, prompt construction, and model routing. That makes them hard to trust or adapt when search answers become part of a product workflow.

Builders need to see how sources are collected and presented, especially when citations, freshness, and failure modes matter.

how Scira solves it

How it solves it#

AI search interface

Scira presents a search-first answer experience rather than a blank chatbot, helping users start from source-backed queries.

Source-focused answers

The product emphasizes answers with sources, which is important when readers need to verify what the model produced.

Self-hostable AGPL codebase

Public AGPL-3.0 code gives developers a path to inspect and adapt the retrieval and answer workflow.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Inspectable answer pipelineScira is useful for builders who want to understand the moving parts behind AI search instead of relying only on a hosted answer engine.
  • Good learning base for AI search productsThe repository gives product developers a concrete AI search implementation to study before building their own experience.

Trade-offs

  • -Search quality depends on providersAI search depends on retrieval sources, model choices, latency, and rate limits. Self-hosting code does not guarantee Perplexity-level results.
  • -Hosted-service license reviewTeams modifying and offering Scira over a network should review AGPL source-sharing requirements.
tech stack · detected from GitHub

What it's built on#

Languages
TypeScript
Frameworks
Next.jsReact
Databases
PostgreSQL
Infrastructure
AWS
Cache
Redis
frequently asked

FAQ#

Is Scira open source?

Yes. Scira is AGPL-3.0 licensed.

Is Scira a Perplexity alternative?

Scira can serve as an open-source AI search alternative for builders, but managed products may still offer stronger hosted polish and reliability.

Can Scira be self-hosted?

The public repository gives developers the code needed to inspect and run the project, subject to its documented setup.

also worth a look

Similar open-source tools#

Trieve

Trieve

Hybrid search and RAG infrastructure for AI knowledge bases

2.7KRustMIT
Metarank

Metarank

Open source personalization and search ranking engine

2.4KScalaApache-2.0
Jina AI

Jina AI

Open source embeddings and rerankers for semantic search and RAG

688TypeScriptApache-2.0
Manticore Search

Manticore Search

MySQL-wire search engine with full-text and real-time indexing

11.8KC++GPL-3.0
Meilisearch

Meilisearch

Typo-tolerant search engine with instant results, one binary

57.5KRust
Firecrawl

Firecrawl

Turn any website into clean markdown or structured JSON for LLMs

119.3KTypeScriptAGPL-3.0

Repository

Stars
11.7K
Forks
1.5K
License
AGPL-3.0
Last commit
79 days ago
Last verified
May 13, 2026
Repo
zaidmukaddam/scira ↗

Additional details

Language
TypeScript
Open issues
24
Contributors
20
First release
2024

Categories

AI & Machine LearningData & AnalyticsLLMOps & AI Tooling

Tags

AI Search ToolsSearch EngineSelf HostedPrivacy ToolsRAGLLMAI Agents