Typesetting:

Reader View for the bloated web: Pipe-able web read view

pandoc:

Static Site Generators

hugo-bearblog wrapping

Keep flat URLs

Hugo
Eleventy:

1// Trims first numbers in a file name
2eleventyConfig.addFilter("trimSlug", slug => slug.replace(/^\d+-/i, ''));

Unicode

Detect non-ASCII:

Security, URL Spoofing:

Spreadsheets

Specify dimensions (No infinite canvas):

LO
sc-im

Format support:

Console Spreadsheets

Variable Tab widths
Filter view:
Sorting a column
Freezing a row
Freezing a column
Git-friendly diffs: e.g: diff a column or a cell instead of the whole row.

Utilities:

Possible filter implementation: Say you got dates and comments of the following files: buy.tsv, sell.tsv, rent.tsv. Then

1cat buy.tsv sell.tsv rent.tsv | sort

Browsing each .tsv file is the equivalent of filter view. The combined output is the default view.

Problem is: how to map it back? Map it back by appending the SHA1 hash of every line (+ fname, line no., etc.) to its beginning. That will make mapping easier and less error prone.

Android

Text editor with timestamps and location stamps.

Puzzle games that would be nice to have as FOSS:

Numberlink game (FreeFlow)
UnblockMe

Interesting apps:

TapTap: Phone Taps and gestures
ProofMode: Cryptographically signed photos and videos.

Avid Seeker