I have asked my players to flesh out some alien species that I rolled up using Aina's Aliengen program. In turn, I have been asked by my players to present benchmarks for tech levels so they have an idea what they are dealing with.
    The following terms are used in the table headings.
    SAGE TL is the tech level for my system. It is loosely based on the 3G3 (Guns, Guns, Guns! 3rd edition) TL scale so I can use the said product to make weapons for my game. The TL of humanity in the game is 14-18.
    Aina's TL is the TL listed on the alien prinouts made with Aliengen.
    Era is the approximate timescale in the Guild Space future history for human development. You will not that the technology-time curve is S-shaped.
    Weapons, Power, Transport, Materials, Biotechnics, and Computer all categories of technological development. Some variance may exist between the TLs in some categories for some races.
 

SAGE                   TL	Aina  TL	Era	Weapon	Power	Transport	Materials	Biotechnics	Computer
1	1	Prehistory	Spears	Fire		Wood
2	1	10000 BC		Domestic Animals		Stone	Herbal Medicine
3	1	3000 BC	Swords			Bronze		Abacus, Geometry
4	2	0 AD			Primitive  Rockets	Iron	Diagnosis of Disease	Algebra
5	2	1400 AD	Matchlocks				Primitive  Anatomy
6	3	1700 AD	Flintlocks			Steel	Simple Surgery	Calculus,  Physics
7	3	1800 AD	Precussion Firearms	Steam  Power		Concrete		Mechanical Adding
8	4	1900 AD	Cartridge Firearms		Aircraft, Automobile		Antiseptics	Relativity, Quantum Mechanics
9	4	1930 AD	SMGs	Fission Power		Stainless  Steel	Mass Vaccination	Vacuum Tubes
10	4	1960 AD	Light Assault Rifles		Orbital and Lunar Flights		Virology;  Prosthetics	Transistors, Feedback
11	5	1980 AD	Autoburst Weapons		Reusable Spacecraft	Ceramics	Transplants, Primitive Cloning	Microchips, Parallel Processing
12	5	2010 AD	Caseless Ammo	Primitive Fusion	SSTO Spacecraft,  Interplanetary Flight	Bucky Tubes	Cloning, Genginerring	Optical Computers
13	5	2070 AD	Portable Railguns	Fusion Power	Beanstalks, Fusion Rocket	EM Strengthening	Anti-Aging Drugs	Primitive Nanonics
14	6	2160 AD	Laser Weapons		Ion Drives	"Hot" Superconducters	Syth-nerve, Cyberware	Quantum Computers
15	6	2280 AD	Personal Mobile Armor	Microfusion	Q-drive	Super- permeables  Elerium-115	Medical Nanonics	Synaptic Processing
16	7	2430 AD	Particle Beam Weapons	Thermal Conversion	Fusion / Ion Drives	Thermelectrics	Cryo Suspension	Sentient Computers
17	7	2610 AD	Gravitic Focused Lasers	CNO Catalysis  Fusion	Hyperslings	Electromagnetic Deflectors	Gengineered Symbiotes	Ultra Cheap Memory
18	8	2820 AD	Antimatter  Warheads	Primitive Antimatter	Psuedo- Reactionless Drives	Stresselectrics	Memory Manipulation	Intelligence Enhnacement
19	8	3060 AD	Advanced Weapons?		Advanced  Stardrives?	Force Fields?	Massive Bioengineering	Sentient Nanonics?
20	8	3330 AD		QBH Power?	Alcubierre  Drive?	Exotic Matter?	Bioships	Memory Transfer?
21+	9	?	?	Direct  Conversion?	Artificial Wormholes?	?	Biohabitats?

 

    Q-drive is the FTL drive subsumed in the Guild Space setting. It is a drive that uses intense fields to enlarge naturally occuring microscopic wormholes that are found close to stars.
    Hyperslings are external Q-drives that can propel a properly equipped ship great distances through Q-space.
    Elerium-115 is a transuranic element with an atomic number of 115 that is essential in gravitic field inducing devices. In the Guild Space setting, artificial gravity and anti-gravity are not widely available due to the expense and rarity of Elerium-115.
    Thermelectics are devices that convert transient thermal energy into electric potential - and current.
    Stresselectrics are materials that prevent plastic deformation with electromagnetic fields.
    Super-permeables are materials that have a very high permeability; they conduct magnetic fields like superconductors conduct current. The key to ultramodern field manipulation technology.
    Microfusion is the practical version of what is now known as "cold fusion."
    CNO fusion is fusion using carbon, nitrogen, and oxygen catalyists that allows the fusion of monatomic hydrogen.
    Quantum computers use the qubit, a multi-state (instead of on/off) memory cell that is conducive to massive parallel and synaptic processing.
    Synth-nerve is a nano-engineered super-conducting latice that is a much more efficient replacement for human nerve material and allows efficient interface between organisms and cybernetics.

    Also, note that due to a derelict spaceship found by humanity, humans recieved Q-drive technology earlier than the listed benchmarks.
    If you are developing your own game setting, the above becnhmarks should only be taken as guidelines as it is, in reality, notoriously hard to predict what the future will hold in any given area of advancement.