When comparing TotalTerminal vs 1Password, the Slant community recommends 1Password for most people. In the question“What are the best power user tools for macOS?” 1Password is ranked 3rd while TotalTerminal is ranked 20th. The most important reason people chose 1Password is:
An iteration on the UI brings a polished look that was already good-looking to begin with. It even tries pulling in relevant app and web icons, adds credit cards logos and has little animation to make the experience more pleasant.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Allows quick access to the terminal system-wide
TotalTerminal is a plugin for Terminal.app. It provides persistent Visor Window which slides down when you press a hot-key.
Pro Quake style window show/hide
You maybe know or don't know Quake from Id Software. But this game had the best idea to hide/show a terminal window. Simply using full width but 26 rows. On show the widow slid down from top of screen. On hide it mode up to top edge of the screen until it disappeared. 2nd next best was the semi translucent background. You could still see through the terminal window while it was shown.
The same style is now available in TotalTerminal and iTerm2 (OSX Terminal replacement - no Terminal plugin).
Pro A clean, good-looking and intuitive UI
An iteration on the UI brings a polished look that was already good-looking to begin with. It even tries pulling in relevant app and web icons, adds credit cards logos and has little animation to make the experience more pleasant.
Pro Available as a webapp, as a standalone application, as an extension, and more, across most platforms, browsers, operating systems, and devices.
Versatility and synchronicity for the majority of the devices and platforms you use. Plus, all software is free with a paid subscription.
Pro Browser integration
Easily fill in passwords with a single keystroke combination.
Quickly add new and update existing passwords right from the browser when the login is detected by the free browser extension.
Pro Can perform an audit on passwords
1Password can checks for weak, duplicate and old passwords you have stored.
Pro Easy to use autofill and password generator
Automatically logs into websites, enters credit card information, fills registration forms, and easily generates strong passwords. Password generator can be adjust to use or exclude certain characters and patterns.
Pro Warns of website vulnerabilities
A feature called Watchtower cross-references known website vulnerabilities with stored login information using a database that is updated daily.
Pro Can also store software and license keys
Pro Collaborative password management
1Password offers an option to create a shared vault for sharing passwords among friends, family and co-workers.
Pro Time based one time passwords
Pro Version now supports time based one time passwords (instead of installing google authenticator).
Pro AES-256 encryption
For more information see here.
Pro TouchID support
All TouchID capable devices are supported.
Pro Cloud & Wi-Fi sync
1Password offers syncing through cloud storage services such as Dropbox and iCloud and a possibility to sync locally over Wi-Fi if you opt not to use cloud storage.
Pro Endorsed by many high credibility security experts
This app is endorsed by many high credibility security experts (for example, Troy Hunt ).
Pro Great customer support
Pro Can store secure notes
1Password can store secure notes which don't file cleanly into other areas like passwords or bank details. Secure notes can be used to record anything you want.
Pro Can use multiple vaults at once and search across vaults
One could manage a vault for work, a vault that's personal and a shared family vault while keeping the details of each segmented from each other and only sync'ed where/if desired.
Pro Active community of users and active / blogging development team
There is an immense sense of community and openness with 1Password.
Pro Periodically assessed by external security auditors and their findings are repaired quickly
Pro Available on multiple platforms
Pro Doesn't depend on the cloud
Unlike many other password management tools, by default the 1Password encrypted database is not stored in the cloud, but strictly locally, for added security.
Pro Makes use of keys so that password to login is never in transit
Cons
Con No longer under active development
Con Doesn't work on El Capitan with SIP on
Apple introduced a new security feature in OSX El Capitan, called System Integrity Protection, that, among other things, does not allow augmenting Terminal. While it's possible to turn SIP off (instructions on how to turn off SIP and get TotalTerminal working on El Capitan can be found here) it is not recommended.

Con Not open source (free/libre)
This application is proprietary, and thus cannot be modified, freely distributed, or trusted to be secure.
Con Inability to fill password sometimes
You have to fill twice to make it work.
Con Default is subscription model
It's really hard to find out how to obtain a full license.
Con Support sucks
Support does sometimes does not read requests thoroughly, and offers ham-baked or non-workable sulutions.
Con Unintuitive and slow responding UI
A hot mess of desktop applications and browser plugins that are supposed to work together, but don't always do. Browser plugins frequently become unresponsive and are very basic in comparison to other solutions.
Con Lack of Google Drive sync
Only icloud, wifi and Dropbox support.
Con Tough/impossible to get on Chromebook
Con Does not auto-fill and generate passwords in Microsoft Edge for Windows 10
The 1Password Edge extension doesn't work as well as in other browsers, as it can't auto-fill and generate passwords. Only LastPass seems to have a fully-functional browser plugin for the Edge browser at this time.
Con Unreasonably high price
It has a high monthly subscription price.
