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Search the Free AI Tools Directory

Filter curated free, freemium, and open-source AI tools by workflow, category, pricing, and practical free-plan signals.

Tip: Start with tools that match your workflow, then compare free limits, signup requirements, output rights, and alternatives before paying for a plan.

Matching AI tools

OpenRead AI tool logo and listing card previewOpenRead AI tool logo and listing card logo
Open Source Score 9.0/10

OpenRead

OpenRead is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Open Source AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 9.0/10Checked 2026-05-06
Needs reviewMFAS 93/100Checked 2026-05-06
Open sourceBrowser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit OpenRead
Keenious AI tool logo and listing card previewKeenious AI tool logo and listing card logo
Freemium Score 7.0/10

Keenious

Keenious is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Keenious
Iris.ai AI tool logo and listing card previewIris.ai AI tool logo and listing card logo
Freemium Score 7.0/10

Iris.ai

Iris.ai is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Iris.ai
Connected Papers AI tool logo and listing card previewConnected Papers AI tool logo and listing card logo
Freemium Score 7.0/10

Connected Papers

Connected Papers is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Connected Papers
Semantic Scholar AI tool logo and listing card previewSemantic Scholar AI tool logo and listing card logo
Freemium Score 7.0/10

Semantic Scholar

Semantic Scholar is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Semantic Scholar
Explainpaper AI tool logo and listing card previewExplainpaper AI tool logo and listing card logo
Freemium Score 7.0/10

Explainpaper

Explainpaper is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Explainpaper
Paperpile AI AI tool logo and listing card previewPaperpile AI AI tool logo and listing card logo
Freemium Score 7.0/10

Paperpile AI

Paperpile AI is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Paperpile AI
SciSpace AI tool logo and listing card previewSciSpace AI tool logo and listing card logo
Freemium Score 7.0/10

SciSpace

SciSpace is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit SciSpace
Scholarcy AI tool logo and listing card previewScholarcy AI tool logo and listing card logo
Freemium Score 7.0/10

Scholarcy

Scholarcy is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Scholarcy
Scite AI tool logo and listing card previewScite AI tool logo and listing card logo
Freemium Score 7.0/10

Scite

Scite is an AI tool for research, document, data, analytics, or knowledge discovery ai tool.

Freemium AI Research, Data & Knowledge Compare free-plan limits on the tool… Score 7.0/10Checked 2026-05-06
Needs reviewMFAS 83/100Checked 2026-05-06
Browser-basedOfficial site
✓Useful free-plan comparison
✓Category-specific workflow support
Details → Visit Scite