# LIFTI

In-memory full-text indexing library for .NET that indexes text and object properties and runs boolean queries over them.


Source: https://findsoftware.frbit.cloud/lifti/
Last reviewed: 2026-10-28
Listed since: 2026-10-28

## Record

### Links

- home: https://mikegoatly.github.io/lifti/
- repository: https://github.com/mikegoatly/lifti
- docs: https://mikegoatly.github.io/lifti/docs

### Identity

- status: active
- maintainer: Mike Goatly
- maintainerType: individual
- parent: unknown
- firstRelease: 2018
- hqCountry: unknown

### Kind

- category: search
- hosting: dotnet
- language: csharp
- runtime: dotnet
- runtimeMin: dotnet 8.0
- basedOn: unknown

### Content

- contentStore: not applicable
- databases: not applicable
- adminUi: not applicable
- headlessApi: not applicable
- templating: not applicable
- i18n: English stemmer by default, custom stemmers

### Rendering and deploy

- runsAs: unknown
- renderingModes: not applicable
- installMethod: Install-Package Lifti.Core

### License

- licenseModel: open-source
- license: MIT

### Releases

- currentMajor: 7
- latestReleaseDate: 2025-12-04

### Adoption

- githubStargazers: 202
- packagistDownloads: not applicable
- npmWeeklyDownloads: not applicable
- contributors: 4
- pluginCount: unknown
- packagistMonthlyDownloads: unknown
- ecosystemsMonthlyDownloads: unknown
- httpArchiveSites: unknown
- wordpressActiveInstalls: unknown
- dependentRepos: unknown
- dependentPackages: unknown

### Sources

- urls: https://mikegoatly.github.io/lifti/ (read 2026-10-28)
- urls: https://api.github.com/repos/mikegoatly/lifti (read 2026-10-28)
- urls: https://mikegoatly.github.io/lifti/docs (read 2026-10-28)
- maintainer: https://raw.githubusercontent.com/mikegoatly/lifti/v7.0.2/LICENSE (read 2026-10-28)
- maintainerType: https://api.github.com/users/mikegoatly (read 2026-10-28)
- category: https://mikegoatly.github.io/lifti/docs (read 2026-10-28)
- language: https://api.github.com/repos/mikegoatly/lifti (read 2026-10-28)
- runtime: https://raw.githubusercontent.com/mikegoatly/lifti/v7.0.2/src/Lifti.Core/Lifti.Core.csproj (read 2026-10-28)
- runtimeMin: https://raw.githubusercontent.com/mikegoatly/lifti/v7.0.2/src/Lifti.Core/Lifti.Core.csproj (read 2026-10-28)
- license: https://api.github.com/repos/mikegoatly/lifti (read 2026-10-28)
- license: https://raw.githubusercontent.com/mikegoatly/lifti/v7.0.2/LICENSE (read 2026-10-28)
- licenseModel: https://raw.githubusercontent.com/mikegoatly/lifti/v7.0.2/LICENSE (read 2026-10-28)
- installMethod: https://mikegoatly.github.io/lifti/ (read 2026-10-28)
- i18n: https://mikegoatly.github.io/lifti/docs (read 2026-10-28)
- currentMajor: https://api.github.com/repos/mikegoatly/lifti/releases/latest (read 2026-10-28)
- latestReleaseDate: https://api.github.com/repos/mikegoatly/lifti/releases/latest (read 2026-10-28)
- firstRelease: https://api.nuget.org/v3/registration5-semver1/lifti.core/index.json (read 2026-10-28)
- githubStargazers: https://api.github.com/repos/mikegoatly/lifti (read 2026-10-28)
- contributors: https://api.github.com/repos/mikegoatly/lifti/contributors (read 2026-10-28)

## Notes

LIFTI is a .NET library that builds a full-text index in memory. An application adds text against a key, or configures an index to read text from the properties of an object, and then runs queries that combine terms with operators. The index can be serialized to a stream and read back later, and the [docs](https://mikegoatly.github.io/lifti/docs) describe writing it to a backing file as changes are made.

Searching uses the English Porter stemmer by default, and the docs describe implementing a custom stemmer for other needs. The package is distributed through NuGet, and the docs name client applications such as Blazor and ASP.NET applications that search a long list of words as use cases.

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Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attributes are recorded, never scored; absent means unknown.
Credit, in full: FindSoftware, CC BY 4.0