Frost Dragons; 3m a hour. . Try using a stabbing weapon. Major issue for RuneScape gold this is that it takes 85 Dungeoneering and probably some magic notepaper. Kill the QBD or ascension monsters (gladii, roarii) until you are able to afford drygores. Continuing with warbands until 96 Herblore is sensible as well.
Combine a nex team or continue with QBD till you've got at least 95 prayer, 96 Herblore, and more tier 90 gear. Skilling- Many people do not enjoy killing things over and over, so I thought I would include this. Runecrafting. Go to the Runespan at level 1, continue training until level 59 Runecrafting. In 59, craft dual cosmic runes through the abyss, which can be 2m per hour. At 82, you can craft double paned runes. Based on the GE costs, it can be better than cosmics. In 91, you are able to craft dual natures. Again, check GE cost to see what is best. Train normally or do daily warbands until a specific level.
Make bare potions (water and also a herb) and then sell them. Crafting. Do Colors of Morton. Repair the temple and make sacred oil by using olive oil together with the sacred fire on world 88. ~1m per hour very AFK. Non-combat Magic. Plank Make at level 86 Magic. Humidify clay at level 68 Magic ~2m/hr. I don't understand how great the collecting skills are for earning money nowadays, but I doubt that they go beyond 1m an hour.
Other. Managing Miscellania - Can both quests involving the area, and place 10m (max amount) in. Expect around 160% on returns when using good allocation (I really do mahogany logs). Player Owned Ports - Would make countless week with about five minutes of work every day. However, you will want to be doing this for around a year and has to have the proper levels to start Ports and create things (it's level 85-93 for everything). Kill Hill Giants from the Edgeville resource dungeon. Pick up the bones and limpwurt roots. ~250k gp/hr. Run muddy keys into your Lava Maze, take no more than the valuable stuff (you should not take anchovy pizzas).
This is the best f2p money making, I think about 400k/hr if you're good, but muddy keys take awhile to buy. For max efficiency, use a gem bag. I like to do this at the hobgoblin mine, use full batwing and protect and you won't require food. Hop worlds. PKers are so rare here you do not even need to think about doing it. You could also superheat by mining the coal to make your trips last longer, I'm not certain whether this is better though. 200-300k gp/hr. Kill greater demons at the Forinthry Dungeon, utilize rune arrows. 100k gp/hr, also it is best range xp for freeplayers that I'm aware of. I think doing air runes is something similar to 200k/hr at 66 runecraft, obviously the higher the better, have not done that recently though. Ideally, you should just buy a bond and earn money using one of the members approaches, assuming you play one hour every day and rs 2007 gold already have decent stats. Comment/tweak this/add stuff.