Read and write Markdown. Highlight a passage, keep a note, and find a word inside a file.

Sign in

The same account as the other Gadget apps

The email on the purchase, and the 16-character signature from that mail, or a licence key. Any active MareArts subscription opens the app.

Highlights

A mark on a passage, kept by the app

The sidebar is the document's own headings. Tables, task lists, footnotes, syntax-highlighted code, LaTeX maths and Mermaid diagrams are drawn from the file. Images are read from the folder beside it, and only from there.

Select a passage and highlight it. The mark stays in the app, not inside the file, and the Highlights panel lists every mark in the open document.

Editing

Source beside the rendered page

Split puts the source beside the rendered page. The editing pane says Editing, and typing is saved about a second after you stop. Ctrl+S saves at once. A file changed outside the app is not overwritten: the app asks which copy to keep.

A plain .txt opens in one pane, not a split. Saving it after formatting creates a .mtx note beside it and leaves the .txt on disk.

Notes

Markdown, or a formatted note

New note asks for a name and whether the file is Markdown or a Note. A note is one pane, with bold, italic, underline, strikethrough, three heading sizes, lists, alignment, fonts, sizes, colours and highlights.

The Notes panel lists what you wrote, grouped by Today, Yesterday and month. Search there matches the text inside a note, not only its name. Earlier versions of the open file sit under that list.

Search

A file name, or a word inside a file

Ctrl+K finds a file by name, and also files that contain the words, with the line under the name. The notes folder is searched whether or not it was added as a folder. Ctrl+F searches only the open document.

Other tools

Rename, filters, print, and the keyboard

Linux (Ubuntu 22.04 & 24.04) · macOS (Apple Silicon & Intel) · Windows 10 & 11

Folders copied to another disk on a schedule. Open the same backup from another PC.

Sign in

The console, not the copies

The email on the purchase, and the 16-character signature from that mail, or a licence key. Any active MareArts subscription opens the app. Scheduled copies keep running while you are signed out.

Overview

Is everything copied?

The first screen says whether the folders are up to date, when the next check runs, and how much room is left on the backup disk. A full disk is named on that line. A run started here shows the live log.

Folders

Sources, one destination, and delete

Add as many source folders as you like. They all copy to one destination. Each row shows the folder, where it lands, and both sizes. Patterns under the list are left out of the copy.

Delete folder removes that folder on the destination, including its earlier copies. The app asks again, and refuses while a run is in progress. Removing a source from the list does not delete those files.

Schedule

Daily, weekly, or monthly

Runs use the operating system's own scheduler. They continue with the window closed. A lapsed subscription closes the console, not the backups. Only one backup runs at a time.

Activity keeps the log of each run. Runs older than the number of days you set are deleted, and at least a few recent ones are always kept. The default is 90 days, and at least five.

Restore

A file from an earlier moment

Pick a folder and a moment, including files you have since changed or deleted. Download one file, or restore it back onto the source.

Another PC

Open this backup from the other computer

The Remote page shows the address of this computer. On the other PC, open that address and sign in with the same MareArts account. The bare address, without the port, is a different service. Sign out other PCs ends those sessions.

On disk

Plain folders, not an archive

Copies are made with rsync into plain folders. There is no archive format, no database and no encryption layer, so the files can be read with the file manager on any machine.

target/
├── current/      the latest copy, mirroring your sources
└── .versions/    one folder per run, holding what changed
    ├── 2026-04-22/
    └── 2026-08-08/

A new file goes into current/. A modified one is updated in current/ and its previous copy moves into that run's version folder. A deleted one leaves current/ and is preserved in the version folder. Only changed files are stored, but each is stored whole.

The copies go to the disk you pointed the app at. Nothing about their contents leaves the computer.

Settings

Test builds stay off

Settings has a switch for test builds. It is off unless you turn it on, and a test build never appears on the download page.

Linux (Ubuntu 22.04 & 24.04) · macOS (Apple Silicon & Intel) · Windows 10 & 11

Cut video on a timeline and place clips on a free canvas. Same sign-in as MARK, Backup and Image Viewer.

Sign in

The same account. Nothing extra to buy.

The email on the purchase, and the 16-character signature from that mail, or a licence key. Any active MareArts subscription opens the app.

Projects

A poster for each project

The home screen is a poster grid. New starts an empty project. Open attaches media you already have. Each card shows that project's folder and how much space it uses. Open folder opens the folder in the file manager. The card itself opens the project. Auto, Light and Dark sit in the footer; the moon in the editor does the same switch.

New project

Size and frame rate

Name it, then pick a format. 1080p, 720p, 4K, vertical 9:16 and square are presets. Width, height and frame rate can be typed instead. Create opens an empty timeline at that size.

Import and split

Picture on L, audio on A

Import puts a file in Sources. Drag it onto L1 or L2, or onto the viewer. Split cuts at the playhead, so one clip becomes two. The filmstrip and the waveform are that clip.

Other tools

Speed, record, text, mosaic

Export

An .mp4 of the timeline you see

Size and frame rate start from the project. Quality is Low, Medium, High or Best. The bar says Opening until the first frame, then Encoding. The file lands in that project's Publish folder unless Browse picks another place. If the computer has a GPU this build can use, decode and encode go through it; otherwise the CPU.

Linux (Ubuntu 22.04 & 24.04) · macOS (Apple Silicon & Intel) · Windows 10 & 11

Look through a folder of pictures. Same sign-in as MARK, Backup and VIDE.

A folder

Icons for the pictures in one place

Open a folder and the pictures sit in a grid. Name, date or size sorts them. The slider on the right goes from a list to large icons. Home, Pictures and the other disks stay in the column on the left.

One picture

Select it, then change the file

A click selects the picture and opens it on the right. The star keeps it. Shift-click selects the pictures in between, and Ctrl-click or Command-click adds one. The commands below apply to one picture or to the whole selection.

Favorites

The star stays on this computer

Starred pictures are listed under Favorites. A starred folder is listed there too, above Home. Neither list is copied to another computer.

Several at once

Resize, convert, rename, rotate

Select more than one picture and the bar offers the same four commands. A preview of the new names appears before a rename is written.

Linux (Ubuntu 22.04 & 24.04) · macOS (Apple Silicon & Intel) · Windows 10 & 11