viexp/docs/research/competitor-landscape.md

type, status, confidence, created, question, tags

type	status	confidence	created	question	tags
research	analyzed	high	2026-10-17	Which terminal file managers exist in 2026, what does each do best, and which ideas should viexp adopt or avoid?	research file-manager yazi nnn lf vifm broot

Competitor landscape (October 2026)

Feature matrix

Manager	Lang	TUI	Image preview	Extensions	Config	Async	State (last release)
yazi	Rust	ratatui	native kitty/iterm2/sixel/ueberzug++/chafa	Lua (mlua, vendored) + ya pack	TOML ×3	tokio, fully	Very active, v26.9.1 (2026-09)
nnn	C	ncurses	via FIFO plugins	any executable; NNN_PIPE/NNN_FIFO protocol	none (flags+env)	no (tiny by design)	Active, v5.3 (2026-08)
lf	Go	own	sixel native; else scripts	shell cmds, push, remote socket API	lfrc DSL	async I/O	Active, r42 (2026-07)
joshuto	Rust	tui-rs/termion	external scripts	config only	5 TOMLs	partial	Semi-stalled, v0.9.9 (2025-05)
felix	Rust	termion	chafa + bat	none	YAML	partial	Dormant since 2025-04
hunter	Rust	own	halfblock/sixel/kitty	mime actions	conf+keymap	heavily threaded	Dead (2020/2022)
vifm	C	ncurses	community scripts only	vim-like :commands + Lua	vifmrc	no	Active, v0.14.4 (2026-05)
broot	Rust	crossterm+termimad	kitty graphics	verbs, skins	TOML	interruptible search	Very active, v1.61 (2026-10)
mc	C	own	none	extfs VFS helpers	menus	background ops	Active, 4.8.33

What the winners do right

• yazi (~43k stars): ~25-crate workspace, everything on tokio; micro/macro worker pools with priorities (mime/previews preempt copying); paged preloading — only visible rows get work; three cancellation mechanisms (tokio abort, atomic tickets for CPU work, instruction-count checks for Lua); two-pass image pipeline (downscale+cache → fit to terminal); DDS pub/sub between instances without a daemon. v25.4 doubled startup speed via config parser rewrite.
• nnn: 150 KiB binary, zero config; plugins = executables with env-var contract ($1 hovered file, $2 cwd, $3 picker) and a tiny write-back protocol via NNN_PIPE; NNN_FIFO streams hovered paths so external scripts render live previews.
• lf: external previewer(file, w, h, x, y) + cleaner contract with exit-code-controlled caching; push simulates keystrokes making mappings composable; server model over Unix socket.
• broot: every keystroke interrupts the running search; fuzzy+regex+content combined with boolean operators; collapsed tree respecting .gitignore.
• felix: built-in trash + undo/redo + zoxide z jump — small features with huge daily value.

Ideas worth stealing (ranked)

1. yazi's paged task scheduling + prioritized workers + cancellation tickets (perceived speed)
2. Protocol auto-detection adapter layer behind one trait (kitty/iterm2/sixel/ueberzug++/chafa)
3. lf's previewer/cleaner argv contract — cheapest path to infinite formats
4. nnn's FIFO hover event stream for external live previews
5. yazi's TOML tables with prepend_*/append_* merge semantics for rules
6. TOML for config + (later) Lua for behavior + pinned plugin packages
7. broot's interruptible, composable search
8. lf's push key-simulation primitive
9. felix's trash + undo + z jump
10. Performance as a marketable feature (both nnn and yazi publish benchmarks)

Anti-patterns to avoid

Trap	Victim	Lesson
Full ranger parity alone	joshuto	5 config files, janky command line, 14-month release gap → audience left for yazi. Ship narrow and polished.
Nightly compiler + heavy C deps	hunter	GStreamer + nightly = unbuildable for users. Stable Rust, spawned binaries for media.
No native graphics path	vifm, nnn, mc	Preview zoo of mutually incompatible scripts. Build the adapter layer early.
Bespoke config DSL	lf	A whole parser users must learn; standard TOML + scripting runtime beats it.
Doctrinal non-features	lf (no tabs)	Minimal defaults and power features are not contradictory (yazi proves it).
Monolith	mc	Thin core + clean contracts.
API churn without pinning	yazi (mild)	Plugin version pinning story from day one.
Silence without governance	felix, hunter	Release cadence = perceived life.

Outcome

Shaped ADR-001 (ratatui), ADR-002 (extension phases), ADR-004 (protocol chain), and the roadmap order (core narrow first, previews second, plugins third, Lua last).

Sources

• yazi: github.com/sxyazi/yazi, https://yazi-rs.github.io/blog/why-is-yazi-fast/, releases v25–v26
• nnn: github.com/jarun/nnn + plugins/README.md
• lf: github.com/gokcehan/lf + doc.md
• joshuto, felix, hunter, vifm, broot, mc: repos + release APIs (dates verified 2026-10-17)