A Workhorse is a type of vehicle, weapon or other type of equipment, that is so reliable or cost-effective that it's kept in service for decades, outlasting other more flashy and advanced types. While the Workhorse might receive some modifications and upgrades during its lifetime, it is never as advanced as its newer cousins. Likely an example of Boring but Practical.
- Warhammer 40K Universe is filled with long-service vehicles and tech. Some maintenance is required, but most gear used by the Imperium of Man dates back decades if not thousands of years. These can range anywhere from regular bolter firearms to power fists, imperial star ships and Dreadnought chassis, which in turn house some of the oldest living members of the Space Marine chapters.
- Probably the crowning example is the Rhino transport, a converted tractor (really) that serves the Space Marines not just as an Awesome Personnel Carrier, but as a tank (as the Predator) and an artillery platform (the Razorback), and is also used by the Adepta Sororitas (including in flamethrower and anti-tank heat gun configurations). It's even used by the Adeptus Arbites (Imperial police) as a riot vehicle. Like most of the other Imperial examples, it's a Standard Template Construct, which means automated factories on thousands of worlds produced them during humanity's golden age, and while the factories have fallen out of repair, enough of them retained their blueprint data that STCs are ubiquitous.
- There are numerous examples of this in Traveller. Probably the most iconic is the Beowulf class Free Trader.
- BattleTech has many BattleMech models which have seen service for centuries of warfare (and sometimes, the individual mechs have seen centuries of combat). The Atlas is one of the most recognizable mechs, and has seen continued use and upgrades for almost four hundred years. On the other handa, most of the modernized workhorses are only externally similar to their originals; an original production AS7-D Atlas (2755), for example, shares very few internal components with the more modern AS7-K Atlas (3050), which carries a completely different fusion reactor design and weapons (dropping the short-ranged Autocannon in favor of a long-ranged Gauss Rifle, for example), though it does share the same combat roles - frontline command and intimidation.
- The Torrent bomber is of note for being in use for close to a thousand years; designed by the United States in 2093, operated on the front lines of the various Great Houses until the 22nd century, and used by militias until Aerospace Fighters began to show up in the 24th century, where it then became a warbird used by civilians in firefighting operations. After the Word of Blake Jihad in 3067, the Capellan Confederation began to bring the planes back into active service.
- Star Wars
- The Imperial-class Star Destroyer was introduced two decades before the events of Star Wars: A New Hope and served for decades after. A more advanced variant, the Imperial II-class, even saw service in the Second Galactic Civil War, forty years after its introduction during the First Galactic Civil War.
- Star Trek:
- The Miranda-class frigate is another one, entering service at least as early as Khan Noonien Singh's reappearance and serving at least as late as the Dominion War.
- The Excelsior-class starship was introduced during the 2280s. Its design was so versatile that it was still in service during the 2370s, nearly a century later. Many Excelsior-class ships filled the Federation ranks during the Dominion War.
- The Klingon Bird of Prey was introduced during the same decade as the Excelsior-class and it too served during the Dominion War of the 2370s.
- The K't'inga-class Klingon Battlecruiser had roughly the same operational length as the Bird of Prey, even being used alongside newer ships in the Dominion War, over 100 years since they entered service.
- E.Y.E.: Divine Cybermancy has the Rotten Mound and KA93 assault rifles, both of which are centuries old (dating back to the Dark Ages) and extremely simple, but are used heavily by all factions due to their heavy stopping power, low cost, and high accuracy. In-game, they're some of the most common weapons used by enemies, and the preferred weapons for many players due to their versatility.
- The TX1 Repeater in PlanetSide 2 has been the standard issue pistol in the Terran Republic military for over 300 years - despite its small size, it has surprising stopping power due to its 3-shot burst (which is effectively fully automatic with a quick finger) and large magazine. Newer derivatives like the TX2 Emperor (200 years old, semi-automatic) and TS2 Inquisitor (New, semi-automatic, huge magazine) have failed to eclipse the Repeater's popularity.
- The Soyuz rocket and capsule design were first introduced in 1966 and both are still in active service. The Soyuz rocket design has flown more than 1700 times, making it the most used space launcher in history. The Soyuz rocket itself is a direct descendant of the rocket that launched Sputnik, the world's first satellite.
- The AK-47, the most popular assault rifle of all time, has been around since 1949 and is still in use with several dozen countries. Around 75 million AK-47s have been built, and that's not counting various modernized models such as AKM, AK-74 and AK-12.
- The Mosin-Nagant rifle, designed in 1891, was continuously produced until The Sixties, and was the Soviet Union's standard weapon until the end of World War II. It was used for even longer as a specialist weapon (generally a sniper), and is still sometimes used by Russian police forces. Seventeen million of them have been made and exported, making them one of the cheapest high-powered weapons available.
- As the name implies, the Colt M1911 was introduced in 1911. While it's been phased out as the US Military's standard issue pistol, it's still in use with the FBI, the US Marine Corps and about two dozen other militaries.
- The B-52 Stratofortress was introduced as one of the first bombers made by the United States following World War II, entering service in 1952. Not only is it in service today, it's expected to stay in service (with upgrades) into the 2040s.
- The M2 Browning .50 cal machine gun was designed in the 1920s, and is still being used as the M2 HBAR (Heavy Barrel) in the U.S. Armed Forces, almost 100 (!) years after it was first introduced, and there are still no plans for a replacement. Well, there were plans-but they failed.
- The American automotive industry, while phasing out individual cars and sometimes entire brands, often continues to use parts originally designed decades prior. The AMC I6 engine was first produced in 1964 and outlived the company that made it, its final application being the Jeep Wrangler in 2006 (in itself a workhorse, being visually unchanged for decades). However, the old parts are often modified beyond their original design, such as the aforementioned engine being upgraded to use fuel injection rather than a carburetor.