Software with Ttf Export

PixelForge is a font editor built for pixel fonts: draw each glyph on a grid, set the spacing and kerning, and export a TrueType file that installs like any other font. It can also import an existing TTF - if it is genuinely a pixel font it detects the size and loads the glyphs back onto the grid for editing.

BitFontMaker2 is a bitmap font editor that runs in a browser: draw each character on a small grid, set the widths, and download a TrueType file. It has been around a long time and stayed simple, which is why it is still the quickest way to get a pixel font out of an idea.

FontStruct builds fonts by snapping shapes together on a grid, which makes it a natural fit for pixel and bitmap lettering. Finished fonts download as TrueType, and the site is also a large public gallery of fonts other people have built, most of which can be opened and taken apart.