Happy Fourth of July! We've rounded up the biggest sales you'll find online for today.

Amazon Massive 4th of July Sale - Everyone's favorite online retailer has slashed up to 70% off select products in certain categories. There are too many products to list here, so just go browse.

Target 4th of July Sale - Target is offering up to 20% off, plus free shipping when you spend over $50.

Walmart 4th of July Sale - Walmart has a slew of markdowns throughout different categories. These sales are legit too... often around 30% lower than anywhere else on the web.

Best Buy 4th of July Sale - BestBuy has big discounts across lots of categories. Free shipping on orders $35 or more.

Cabela's: Up to 40% Off - Cabela's is offering up to 40% off select items in the store. Lots of great outdoor products on sale.

Cool Material Knives are 58% Off - Until July 7th you can take 58% off every knife in the Cool Material store.

Newegg up to 70% Off - Take up to 70% off select electronic items.

OfficeMax: Up to 67% Off + $25 off $150 Spent - OfficeMax has a great couple of promotions. First off, they're offering a selection of highly-discounted products. Then they've got a coupon code "SAVE25" to take 25% off orders of $150 or more. Expires 7/5.

ThinkGeek - ThinkGeek is offering 20% off with the coupon code "MERICA". Expires the 6th.

Gap Extra 25% Off - Use the coupon code "TREAT" to take an extra 25% off your order. Expires tonight.

Harbor Freight Tools - Extra 25% Off A Single Item - Use the coupon code "32298135" to take an extra 25% off a single item. Expires tonight.

Apple Back to School Sale - Apple's best sale of the year, the Back to School Sale starts today. It gives a $100 gift card when you buy a mac, and a $50 gift card when you buy an iPad or iPhone.

Old Navy up to 50% Off - Old Navy is offering up to 50% on the entire store.

Lenovo 30% Off Laptops & Desktops - Free shipping on everything, expires 7/6.

LivingSocial 14% Off - Take 14% off everything at LivingSocial when you use the coupon code "14JULY". Coupon expires on the 6th, and the max discount is $20.

Canon Up to 50% Off Refurbished Lenses - Pretty selef explanitory. The lenses are factory refurbished.

TigerDirect 4th Sale - TVs, laptops, storage and other electonrics on sale.

Monoprice - Up to 30% Off - Take up to 30% off select categories at the electronics store Monoprice.

Dell Home - Up to $250 Off Laptop and Desktop Computers - Dell has a slew of coupons for desktops, pcs and electronics. Expire 8/1.

• Extra $50 off Select Laptop & Desktop PCs $699.99 with coupon code "0GJHSKM3CG$C1H"

• 25% off Select Dell Laptop & Desktop Computers with coupon code "?$QNC1?HSKNR9F"

• 20% off Select Dell Laptop & Desktop Computers with coupon code "5TK?LC9VJ5F$33"

• Extra $100 off Dell XPS 8700 Desktops $1299 or more with coupon code "LSVTHBFK31JWD7"

• 10% off Electronics & Accessories with coupon code "T2LLG$98G7$F19"

• 15% off Select PC Accessories with coupon code "QG3G$33HH3QP0?"

• 10% off Dell Branded Bags & Sleeves after coupon code "9T2GN7?0KS4GC!"

Nautica 4th of July Sale - Extra 50% Off Sale Items - Use the coupon code "USA50" to take an extra 50% off sale items.

REI - Up to 30% off - Outdoor store REI is offering up to 30% off select items with their sale.

MacMall up to $649 Off Apple Products - MacMall has a great roundup of products for sale on Apple Macbooks, iPads, iMacs and other accessories.

Overstock 4th of July Sale - 60% off - Take 30-60% off on selected categories.

Adorama - Up to 50% Off - Take up to 50% off select products at camera store Adorama. Displays, HDTVs, sound systems, storage, cameras and equipment and more.