OTS File

What are OTS files and how to open them

Are you having problems opening an OTS file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your OTS files.

What is an OTS file?

OTS files have multiple uses, and OpenDocument Spreadsheet Template is one of them. Read more about the other uses further down the page.

OpenDocument Spreadsheet Template

These files are created with the OpenOffice spreadsheet application. OpenOffice provides users with an XML-based freeware suite of software similar to Microsoft Office.

The OTS files contain template files used by the OpenOffice spreadsheet application. These files are similar to Microsoft Excel template files.

How to open OTS files

We have identified two OTS openers that are compatible with this specific type of OTS file.

Programs that open OpenDocument Spreadsheet Template files

Last updated: August 10, 2026

All known file formats using extension .OTS

While OpenDocument Spreadsheet Template is a popular type of OTS-file, we know of 3 different uses of the .OTS file extension. Different software may use files with the same extension for different types of data.

OpenTimestamps Proof

We know that one OTS format is OpenTimestamps Proof. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

While we have not verified the apps ourselves yet, our users have suggested ten different OTS openers which you will find listed below.

Ots Album File

Ots Album Files are a proprietary media container format produced by Ots Studio. They store an entire music album or collection - including multiple tracks or "items" - alongside metadata and non-audio data needed by DJ or music playout software. Typical contents include the audio or video data for each track, artist and track titles, album art, genre, release and copyright information, mix-point information, and optional data chunks such as beat-information or CD+G display graphics. An Ots file preserves high audio quality: it allows lossless conversion from source MP3, MP2 or uncompressed PCM WAV, and retains fidelity when converting back from Ots to supported formats.

Ots Studio is the chief program that creates, edits and uses these files. Users can rip audio CDs or import MP3, WAV, MPEG video, VOB files (unencrypted DVDs) and convert them into a single Ots Album file. Within Ots Studio one can also modify album-level metadata, item-level metadata, mix points, auto beat-mix cues, cover art, and aspects of video content. The Batch Conversion Utility in Ots Studio enables grouping files in a folder into one album file, or creating separate Ots files per track. Exporting back to formats like WAV or MP3 is supported.

Inside, the format uses a chunk-based, extensible structure. Chunks are blocks of data of defined types, global to the album, item default, or specific to individual items. Global chunks cover things like album art or album title. Item default chunks apply to all items unless they are overridden per item. Explicit item chunks hold things like audio or video data for a track, item-specific title or artist. An Ots file can contain up to about 65,000 items.

OTS opener for Windows

We have identified one OTS opener that is compatible with this specific type of OTS file.

Various apps that use files with this extension

These apps are known to open certain types of OTS files. Remember, different programs may use OTS files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about OTS file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.