TARILIO and TARILIO Portable, both are free of charge for private non-commercial use. TARILIO PRO with additional closed source code is for commercial use. (These products previously used a working title of ‘eSearch’ – see: https://github.com/electronart/esearch-project/wiki
TARILIO offers advanced information retrieval with an integrated AI Mode with multiple connections to online or offline Large Language Models (LLMs) and built-in MCP Client.

Designed to quickly access information from a wide range of local and remote data sources, in any language.
Plugin architecture to expand search to external data sources such as Amazon S3, Microsoft OneDrive, Dropbox, etc.
Typical usage include searching case law, legal precedents, academic literature, project documents, translation, investigative journalism, OSINT, source code, knowledge-management & research in many domains.
AI Mode
Ideal for evaluating LLM performance and gathering AI assistant user feedback within a workgroup.

Features
Word List: Fully scrollable word list displays all the words – with word count – in your files, in AI Mode it lists Question Stems. Double-click on a word to enter it in the search query or use voice-input!
Indexer: Multiple indexes. Each index can be given a meaningful name and easily configured to include folders, files or specific file types. Index options include multilingual stop words, case sensitivity, maximum file size, or word length. Scheduled Indexing.
Results List: Scrollable list of results, with user choice of metadata columns. Sort on any column.

View Window: View files with query words highlighted. View images and their metadata. Images containing geolocation data can display the location on a map. Built in PDF viewer. Source code formats are displayed with syntax highlighting and line numbers. Navigate between numbered highlighted hits.
Quickly insert Boolean operators with ‘All’ or ‘Any’ word defaults.
Search using a ‘List of words’ for eDiscovery/eDisclosure.
Regular Expression search. Built in IPV4 search example.
Search expansion options include multilingual stemming and multiple pre-defined and a user-defined thesaurus files.
Export results as time-stamped XML, CSV or TSV file.
Copy document text, append notes, to clipboard or a timestamped file.
Metadata is displayed in a separate window.
Free Amazon S3 plugin.
Search inside compressed archive files like .zip .rar .bz2 .gzip .7z
Multilingual UI.
You can instantly switch the UI language.
Translate the user interface using the free Language File Editor!
TARILIO is a self-contained 64-bit .NET 8.0 application using the open-source Apache Lucene .NET search engine.
Install on any Windows 10 or 11 machine without worrying about the installed .NET runtime. There is no need to download any other files, such as Java or C++ runtimes. Portable version can be run on a USB 3.x flash drive, to search files on the host machine or on the USB drive.
Cross-Platform
Versions will be available for Linux and macOS as well as Microsoft Windows 10 or 11 64-bit.
Note: The eSearch Project was open-sourced 25 July 2025 and consisted of eSearch Pro and eSearch Portable, both are free of charge for private non-commercial use. After the 4 November 2025 release the eSearch working title will be replaced with TARILIO. TARILIO PRO with additional closed source code is now available for commercial use.
https://github.com/electronart/esearch-project/wiki
Plugins:
The S3 sample plugin was open sourced 7 November 2025 to enable developers to add support for additional features, such as connection to web based data-sources like Dropbox, Box, Google Docs. Approved plugins may be offered for sale for TARILIO PRO users.
Free for personal use. (May also be used for 30-day evaluation commercial use).
All feedback & suggestions are very welcome!
Contact us…
Introductory offer: TARILIO PRO will be supplied free of charge to holders of a dtSearch Desktop license that is within the included one year support or current on extended support from dtSearch UK. (Reserve your copy now, Available until further notice)
1.1.9439 (2025-11-04)
Sign up to test latest ‘members only’ beta.
As from 25 October 2025 LFE is now open source. You can contribute to the project here:
GitHub: Language File Editor
Immediate download, no registration required.
All feedback & suggestions are welcome!
TARILIO Portable is a version designed to run from a USB 3.x flash drive. Nothing is stored on the host machine and Internet access is not required.
Use it to search a portable library on the USB flash drive or to index and search files on host machine(s).
TARILIO Portable Search-Only commercial license lets you publish searchable document/image collections within an organisation or to your clients or subscribers. Ideal where access to internet is unreliable or security is a priority.
See eSearch Pro User Guide for details.