A couple of filters for AngularJS.

filters.js

app.filter('escape', function () {
  return function (text) {
    if (!text) return '';

    return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
  };
});

app.filter('linkify', function () {
  var domainRegexp = /(https?|ftp):\/\/(.*)/;

  var urlPatternReplacer = function (match, contents, offset, s) {
    return '<a href="' + match + '">' + match.match(domainRegexp)[2] + '</a>';
  };

  return function (text) {
    if (!text) return '';

    var urlPattern = /\b(?:https?|ftp):\/\/[a-z0-9-+&@#\/%?=~_|!:,.;]*[a-z0-9-+&@#\/%=~_|]/gim;
    return text.replace(urlPattern, urlPatternReplacer);
  };
});