diff --git a/src/atom-environment.js b/src/atom-environment.js
index 510970615c..ecaa4a8e57 100644
--- a/src/atom-environment.js
+++ b/src/atom-environment.js
@@ -48,6 +48,7 @@ const StartupTime = require('./startup-time');
 const { getReleaseChannel } = require('./get-app-details.js');
 const UI = require('./ui.js');
 const packagejson = require("../package.json");
+const CONSTANTS = require("./pulsar-constants.js");
 
 const stat = util.promisify(fs.stat);
 
@@ -393,15 +394,15 @@ class AtomEnvironment {
   registerDefaultOpeners() {
     this.workspace.addOpener(uri => {
       switch (uri) {
-        case 'atom://.pulsar/stylesheet':
+        case CONSTANTS.STYLESHEET_URI:
           return this.workspace.openTextFile(
             this.styles.getUserStyleSheetPath()
           );
-        case 'atom://.pulsar/keymap':
+        case CONSTANTS.KEYMAP_URI:
           return this.workspace.openTextFile(this.keymaps.getUserKeymapPath());
-        case 'atom://.pulsar/config':
+        case CONSTANTS.CONFIG_URI:
           return this.workspace.openTextFile(this.config.getUserConfigPath());
-        case 'atom://.pulsar/init-script':
+        case CONSTANTS.INIT_SCRIPT_URI:
           return this.workspace.openTextFile(this.getUserInitScriptPath());
       }
     });
diff --git a/src/atom-paths.js b/src/atom-paths.js
index 7afa4d8a22..a7ae5498e0 100644
--- a/src/atom-paths.js
+++ b/src/atom-paths.js
@@ -1,5 +1,6 @@
 const fs = require('fs-plus');
 const path = require('path');
+const CONSTANTS = require("./pulsar-constants.js");
 
 const hasWriteAccess = dir => {
   const testFilePath = path.join(dir, 'write.test');
@@ -28,7 +29,7 @@ const getAppDirectory = () => {
 module.exports = {
   setAtomHome: homePath => {
     // When a read-writeable .pulsar folder exists above app use that
-    const portableHomePath = path.join(getAppDirectory(), '..', '.pulsar');
+    const portableHomePath = path.join(getAppDirectory(), '..', CONSTANTS.DOT_FOLDER);
     if (fs.existsSync(portableHomePath)) {
       if (hasWriteAccess(portableHomePath)) {
         process.env.ATOM_HOME = portableHomePath;
@@ -46,7 +47,7 @@ module.exports = {
     }
 
     // Fall back to default .atom folder in users home folder
-    process.env.ATOM_HOME = path.join(homePath, '.pulsar');
+    process.env.ATOM_HOME = path.join(homePath, CONSTANTS.DOT_FOLDER);
   },
 
   setUserData: app => {
diff --git a/src/main-process/atom-application.js b/src/main-process/atom-application.js
index a42b566980..ae2f666f62 100644
--- a/src/main-process/atom-application.js
+++ b/src/main-process/atom-application.js
@@ -31,6 +31,7 @@ const _ = require('underscore-plus');
 let FindParentDir = null;
 let Resolve = null;
 const ConfigSchema = require('../config-schema');
+const CONSTANTS = require("../pulsar-constants.js");
 
 const LocationSuffixRegExp = /(:\d+)(:\d+)?$/;
 
@@ -657,21 +658,21 @@ module.exports = class AtomApplication extends EventEmitter {
       });
     }
 
-    this.openPathOnEvent('application:about', 'atom://about');
-    this.openPathOnEvent('application:show-settings', 'atom://config');
-    this.openPathOnEvent('application:open-your-config', 'atom://.pulsar/config');
+    this.openPathOnEvent('application:about', CONSTANTS.ABOUT_UI_URI);
+    this.openPathOnEvent('application:show-settings', CONSTANTS.CONFIG_UI_URI);
+    this.openPathOnEvent('application:open-your-config', CONSTANTS.CONFIG_URI);
     this.openPathOnEvent(
       'application:open-your-init-script',
-      'atom://.pulsar/init-script'
+      CONSTANTS.INIT_SCRIPT_URI
     );
-    this.openPathOnEvent('application:open-your-keymap', 'atom://.pulsar/keymap');
+    this.openPathOnEvent('application:open-your-keymap', CONSTANTS.KEYMAP_URI);
     this.openPathOnEvent(
       'application:open-your-snippets',
-      'atom://.pulsar/snippets'
+      CONSTANTS.SNIPPETS_URI
     );
     this.openPathOnEvent(
       'application:open-your-stylesheet',
-      'atom://.pulsar/stylesheet'
+      CONSTANTS.STYLESHEET_URI
     );
     this.openPathOnEvent(
       'application:open-license',
@@ -1527,7 +1528,7 @@ module.exports = class AtomApplication extends EventEmitter {
   //   :safeMode - Boolean to control the opened window's safe mode.
   openUrl({ urlToOpen, devMode, safeMode, env }) {
     const parsedUrl = url.parse(urlToOpen, true);
-    if (parsedUrl.protocol !== 'atom:') return;
+    if (parsedUrl.protocol !== CONSTANTS.PROTOCOL_COLON) return;
 
     const pack = this.findPackageWithName(parsedUrl.host, devMode);
     if (pack && pack.urlMain) {
diff --git a/src/main-process/atom-protocol-handler.js b/src/main-process/atom-protocol-handler.js
index 5dced9a6eb..fa8f2a540e 100644
--- a/src/main-process/atom-protocol-handler.js
+++ b/src/main-process/atom-protocol-handler.js
@@ -1,6 +1,7 @@
 const { protocol } = require('electron');
 const fs = require('fs');
 const path = require('path');
+const CONSTANTS = require("../pulsar-constants.js");
 
 // Handles requests with 'atom' protocol.
 //
@@ -30,7 +31,7 @@ module.exports = class AtomProtocolHandler {
 
   // Creates the 'atom' custom protocol handler.
   registerAtomProtocol() {
-    protocol.registerFileProtocol('atom', (request, callback) => {
+    protocol.registerFileProtocol(CONSTANTS.PROTOCOL, (request, callback) => {
       const relativePath = path.normalize(request.url.substr(7));
 
       let filePath;
diff --git a/src/main-process/parse-command-line.js b/src/main-process/parse-command-line.js
index 6eace2f151..0a15cd4e52 100644
--- a/src/main-process/parse-command-line.js
+++ b/src/main-process/parse-command-line.js
@@ -3,6 +3,7 @@
 const dedent = require('dedent');
 const yargs = require('yargs');
 const { app } = require('electron');
+const CONSTANTS = require("../pulsar-constants.js");
 
 module.exports = function parseCommandLine(processArgs) {
   // macOS Gatekeeper adds a flag ("-psn_0_[six or seven digits here]") when it intercepts Pulsar launches.
@@ -28,7 +29,7 @@ module.exports = function parseCommandLine(processArgs) {
     A file may be opened at the desired line (and optionally column) by
     appending the numbers right after the file name, e.g. \`pulsar file:5:8\`.
 
-    Paths that start with \`atom://\` will be interpreted as URLs.
+    Paths that start with \`${CONSTANTS.PROTOCOL_COLON_SLASHES}\` will be interpreted as URLs.
 
     Environment Variables:
 
@@ -36,7 +37,7 @@ module.exports = function parseCommandLine(processArgs) {
                               Defaults to \`~/github/atom\`.
 
       ATOM_HOME               The root path for all configuration files and folders.
-                              Defaults to \`~/.pulsar\`.`
+                              Defaults to \`~/${CONSTANTS.DOT_FOLDER}\`.`
   );
   options
     .alias('d', 'dev')
@@ -76,7 +77,7 @@ module.exports = function parseCommandLine(processArgs) {
     .boolean('safe')
     .describe(
       'safe',
-      'Do not load packages from ~/.pulsar/packages or ~/.pulsar/dev/packages.'
+      `Do not load packages from ~/${CONSTANTS.DOT_FOLDER}/packages or ~/${CONSTANTS.DOT_FOLDER}/dev/packages.`
     );
   options
     .boolean('benchmark')
@@ -171,7 +172,7 @@ module.exports = function parseCommandLine(processArgs) {
     args = {
       uriHandler: true,
       'uri-handler': true,
-      _: args._.filter(str => str.startsWith('atom://')).slice(0, 1)
+      _: args._.filter(str => str.startsWith(CONSTANTS.PROTOCOL_COLON_SLASHES)).slice(0, 1)
     };
   }
 
@@ -219,7 +220,7 @@ module.exports = function parseCommandLine(processArgs) {
       // In the next block, .startsWith() only works on strings. So, skip non-string arguments.
       continue;
     }
-    if (path.startsWith('atom://')) {
+    if (path.startsWith(CONSTANTS.PROTOCOL_COLON_SLASHES)) {
       urlsToOpen.push(path);
     } else {
       pathsToOpen.push(path);
diff --git a/src/main-process/start.js b/src/main-process/start.js
index 829aba60ae..82cc475d53 100644
--- a/src/main-process/start.js
+++ b/src/main-process/start.js
@@ -8,6 +8,7 @@ const fs = require('fs');
 const CSON = require('season');
 const Config = require('../config');
 const StartupTime = require('../startup-time');
+const CONSTANTS = require("../pulsar-constants.js");
 
 StartupTime.setStartTime();
 
@@ -70,7 +71,7 @@ module.exports = function start(resourcePath, devResourcePath, startTime) {
   }
 
   const releaseChannel = getReleaseChannel(app.getVersion());
-  let appUserModelId = 'dev.pulsar-edit.pulsar.' + process.arch;
+  let appUserModelId = `${CONSTANTS.APP_IDENTIFIER}.${process.arch}`;
 
   // If the release channel is not stable, we append it to the app user model id.
   // This allows having the different release channels as separate items in the taskbar.
diff --git a/src/protocol-handler-installer.js b/src/protocol-handler-installer.js
index 383df8af94..aae850f937 100644
--- a/src/protocol-handler-installer.js
+++ b/src/protocol-handler-installer.js
@@ -1,4 +1,5 @@
 const { ipcRenderer } = require('electron');
+const CONSTANTS = require("./pulsar-constants.js");
 
 const SETTING = 'core.uriHandlerRegistration';
 const PROMPT = 'prompt';
@@ -12,7 +13,7 @@ module.exports = class ProtocolHandlerInstaller {
 
   async isDefaultProtocolClient() {
     return ipcRenderer.invoke('isDefaultProtocolClient', {
-      protocol: 'atom',
+      protocol: CONSTANTS.PROTOCOL,
       path: process.execPath,
       args: ['--uri-handler', '--']
     });
@@ -24,7 +25,7 @@ module.exports = class ProtocolHandlerInstaller {
     return (
       this.isSupported() &&
       ipcRenderer.invoke('setAsDefaultProtocolClient', {
-        protocol: 'atom',
+        protocol: CONSTANTS.PROTOCOL,
         path: process.execPath,
         args: ['--uri-handler', '--']
       })
@@ -82,13 +83,13 @@ module.exports = class ProtocolHandlerInstaller {
     };
 
     notification = notifications.addInfo(
-      'Register as default atom:// URI handler?',
+      `Register as default ${CONSTANTS.PROTOCOL_COLON_SLASHES} URI handler?`,
       {
         dismissable: true,
         icon: 'link',
         description:
-          'Pulsar is not currently set as the default handler for atom:// URIs. Would you like Pulsar to handle ' +
-          'atom:// URIs?',
+          `Pulsar is not currently set as the default handler for ${CONSTANTS.PROTOCOL_COLON_SLASHES} URIs. Would you like Pulsar to handle ` +
+          `${CONSTANTS.PROTOCOL_COLON_SLASHES} URIs?`,
         buttons: [
           {
             text: 'Yes',
diff --git a/src/pulsar-constants.js b/src/pulsar-constants.js
new file mode 100644
index 0000000000..1cedbc16df
--- /dev/null
+++ b/src/pulsar-constants.js
@@ -0,0 +1,27 @@
+// A definition for all Pulsar Constants that are ubiquitous throughout the codebase
+const CONSTANTS = {};
+
+CONSTANTS.PROTOCOL = "atom";
+CONSTANTS.PROTOCOL_COLON = `${CONSTANTS.PROTOCOL}:`;
+CONSTANTS.PROTOCOL_COLON_SLASHES = `${CONSTANTS.PROTOCOL_COLON}//`;
+// ^^ atom://
+// If changing the protocol name, it must be changed in ./static/index.html
+CONSTANTS.DOT_FOLDER = ".pulsar";
+// ^^ The folder where all user data and configuration data is stored
+CONSTANTS.APP_IDENTIFIER = "dev.pulsar-edit.pulsar";
+CONSTANTS.STYLESHEET_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}${CONSTANTS.DOT_FOLDER}/stylesheet`;
+// ^^ atom://.pulsar/stylesheet
+CONSTANTS.KEYMAP_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}${CONSTANTS.DOT_FOLDER}/keymap`;
+// ^^ atom://.pulsar/keymap
+CONSTANTS.CONFIG_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}${CONSTANTS.DOT_FOLDER}/config`;
+// ^^ atom://.pulsar/config
+CONSTANTS.INIT_SCRIPT_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}${CONSTANTS.DOT_FOLDER}/init-script`;
+// ^^ atom://.pulsar/init-script
+CONSTANTS.SNIPPETS_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}${CONSTANTS.DOT_FOLDER}/snippets`;
+// ^^ atom://.pulsar/snippets
+CONSTANTS.CONFIG_UI_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}config`;
+// ^^ atom://config
+CONSTANTS.ABOUT_UI_URI = `${CONSTANTS.PROTOCOL_COLON_SLASHES}about`;
+// ^^ atom://about
+
+module.exports = CONSTANTS;
diff --git a/src/uri-handler-registry.js b/src/uri-handler-registry.js
index 1189cb7840..be233288be 100644
--- a/src/uri-handler-registry.js
+++ b/src/uri-handler-registry.js
@@ -1,5 +1,6 @@
 const url = require('url');
 const { Emitter, Disposable } = require('event-kit');
+const CONSTANTS = require("./pulsar-constants.js");
 
 // Private: Associates listener functions with URIs from outside the application.
 //
@@ -95,7 +96,7 @@ module.exports = class URIHandlerRegistry {
   async handleURI(uri) {
     const parsed = url.parse(uri, true);
     const { protocol, slashes, auth, port, host } = parsed;
-    if (protocol !== 'atom:' || slashes !== true || auth || port) {
+    if (protocol !== CONSTANTS.PROTOCOL_COLON || slashes !== true || auth || port) {
       throw new Error(
         `URIHandlerRegistry#handleURI asked to handle an invalid URI: ${uri}`
       );
diff --git a/src/window-event-handler.js b/src/window-event-handler.js
index b796defb6d..2750c4afd6 100644
--- a/src/window-event-handler.js
+++ b/src/window-event-handler.js
@@ -1,6 +1,7 @@
 const { Disposable, CompositeDisposable } = require('event-kit');
 const listen = require('./delegated-listener');
 const { debounce } = require('underscore-plus');
+const CONSTANTS = require("./pulsar-constants.js");
 
 // Handles low-level events related to the `window`.
 module.exports = class WindowEventHandler {
@@ -306,7 +307,7 @@ module.exports = class WindowEventHandler {
     if (uri && uri[0] !== '#') {
       if (/^https?:\/\//.test(uri)) {
         this.applicationDelegate.openExternal(uri);
-      } else if (uri.startsWith('atom://')) {
+      } else if (uri.startsWith(CONSTANTS.PROTOCOL_COLON_SLASHES)) {
         this.atomEnvironment.uriHandlerRegistry.handleURI(uri);
       }
     }