Another site:
AllTop 200 most popular tests to learn English...
1) Test de niveau anglais (webmaster) 6 776 243
2) Placement test : grammar for beginners (anonyme) 5 988 114
3) A/AN (webmaster) 5 362 920
4) Auxiliary BE (webmaster) 3 223 126
5) Present continuous (webmaster) 2 997 883
6) Present simple (webmaster) 2 910 168
7) Present simple (webmaster) 2 596 122
8) Present continuous (webmaster) 2 431 744
9) Adjectives (webmaster) 2 092 870
10) A/an (anonyme) 2 014 091
11) Present perfect simple (webmaster) 1 640 759
12) Preterite (webmaster) 1 624 714
13) Vocabulary - Placement test (bridg) 1 618 658
14) Preterite (webmaster) 1 445 392
15) Short placement test (webmaster) 1 443 078
16) To be (bridg) 1 405 583
17) What time is it? (webmaster) 1 348 567
18) Present perfect (webmaster) 1 344 149
19) The alphabet in English (webmaster) 1 320 399
20) Adjectives (anonyme) 1 215 279
21) What time is it? (webmaster) 1 207 042
22) Numbers (webmaster) 1 188 210
23) 'A' ou 'An' (anonyme) 1 174 568
24) Two presents: present continuous, present simple (webmaster) 1 148 558
25) To be (bridg) 1 144 999
26) Comparatives / Superlatives (webmaster) 1 101 842
27) Numbers (webmaster) 1 070 227
28) CAN / MUST (webmaster) 1 058 042
29) THE/ A / AN / nothing (webmaster) 1 032 466
30) Comparatives (webmaster) 1 006 743
31) Family life (bridg) 1 000 271
32) Numbers > 100 (webmaster) 986 016
33) Future (going to/will/present continuous) (anonyme) 962 938
34) Plural (webmaster) 955 271
35) Superlatives (webmaster) 874 671
36) Adjectives (anonyme) 874 346
37) Simple present (bridg) 853 312
38) Spelled words N°1 (bridg) 849 721
39) Placement test beginners: Check your spelling (anonyme) 829 858
40) Introducing oneself (webmaster) 826 895
41) Adverbs of frequency (anonyme) 816 576
42) Family (bridg) 784 305
43) General test-End of high school / Beginning of university (webmaster) 782 373
44) Present simple (anonyme) 779 307
45) Frequency adverbs (webmaster) 777 432
46) Present BE + Ving (bridg) 764 558
47) Genitive (webmaster) 723 240
48) Family tree (anonyme) 719 055
49) Passive form (anonyme) 718 488
50) Preterite: simple or continuous? (webmaster) 715 975
51) Placement test (beginners) (lili73) 700 553
52) Past simple or present perfect (anonyme) 692 992
53) Future (webmaster) 675 575
54) 2 Preterites (webmaster) 661 414
55) Present perfect simple (bridg) 659 431
56) Preterite (webmaster) 619 682
57) List of 200 irregular verbs and audio (bridg) 615 600
58) Modals (webmaster) 612 407
59) Spelled words N°2 (bridg) 608 835
60) Height (webmaster) 606 094
61) Modals (webmaster) 604 511
62) Articles a / an / the (anonyme) 596 740
63) Plural forms (bridg) 577 022
64) Nationalities (webmaster) 573 936
65) Past continuous / Past simple (anonyme) 565 116
66) Irregular plurals (bridg) 553 230
67) Two presents: simple and continuous (webmaster) 549 257
68) Preterite (bridg) 548 576
69) Superlatives (frapedur) 537 235
70) Vocabulary: greeting people (here4u) 536 441
71) Give your opinion (bridg) 531 613
72) Adverbs of Frequency (bridg) 516 704
73) Present simple or continuous (anonyme) 509 806
74) Present perfect / preterite ? (anonyme) 508 305
75) Possessive case (anonyme) 480 287
76) Countries & nationalities (bridg) 473 097
77) 'The' or nothing? (webmaster) 471 040
78) Introducing oneself (easy) (webmaster) 470 520
79) Past tenses (bridg) 470 329
80) Passive voice (webmaster) 462 537
81) Present Simple vs. Past Simple (anonyme) 456 126
82) Questions : how to ask them (anonyme) 447 930
83) General Test II / End of high school / Beginning of universi (webmaster) 445 919
84) IN, ON, AT or TO? (webmaster) 444 731
85) Relative pronouns (webmaster) 443 901
86) Comparative of superiority (anonyme) 437 902
87) How to pronounce the final -ED? (past simple) (webmaster) 437 055
88) Relative clauses (webmaster) 422 984
89) Sounds: [h] (webmaster) 419 320
90) Comparative (anonyme) 412 978
91) A/an/Ø (bridg) 398 387
92) Future simple (anonyme) 395 846
93) Past simple (anonyme) 395 733
94) This / That / These / Those (webmaster) 392 294
95) Conditional (webmaster) 391 329
96) Passive voice (anonyme) 390 055
97) Comparing (webmaster) 387 811
98) Can / could/ may/ might (woodyrun) 379 071
99) Present perfect or past tense (anonyme) 376 658
100) Much, many, little and few (felin) 372 131
101) Personal pronouns (anonyme) 371 224
102) Preterite continuous (BE + -ING) (webmaster) 368 521
103) Some, any, no, enough, too/too much/too many (webmaster) 367 947
104) Genitive case (bridg) 367 657
105) Confusing words - Placement test (bridg) 364 444
106) Irregular verbs (webmaster) 363 293
107) Numbers from 1 to 10 (anonyme) 361 340
108) Past perfect simple, past perfect continuous (anonyme) 360 772
109) Present continuous or present simple (webmaster) 359 383
110) Present perfect or preterite? (anonyme) 356 187
111) Simple Past : regular verbs (anonyme) 352 340
112) Comparative Adjectives (bridg) 352 008
113) Who, Whom, Which, or Whose? (anonyme) 348 487
114) Past simple (video) (anonyme) 347 986
115) Past simple or past continuous (anonyme) 341 464
116) While / When (anonyme) 338 037
117) What time is it? (webmaster) 337 511
118) Modals (tinou) 336 308
119) Modal: may/might (anonyme) 333 963
120) Cardinal and ordinal numbers (anonyme) 328 532
121) The superlative (anonyme) 324 448
122) Possessive adjectives and pronouns (woodyrun) 323 927
123) How to talk about the weather (lili73) 320 859
124) Since and for (anonyme) 318 440
125) Flags (webmaster) 317 368
126) Irregular verbs (bridg) 315 768
127) Prepositions - in, on, at (anonyme) 313 944
128) Pronouns (woodyrun) 313 121
129) Tenses (anonyme) 311 595
130) Placement test 3 (webmaster) 310 254
131) Order of adjectives (webmaster) 306 393
132) Could/Couldn't (laure95) 305 653
133) Comparative (anonyme) 304 295
134) Adjectives and prepositions (anonyme) 303 918
135) Agreement Tags (webmaster) 303 861
136) Asking questions (webmaster) 302 919
137) Present perfect OR simple past? (bridg) 298 182
138) Questions in the past tense (anonyme) 297 278
139) Superlative Adjectives (bridg) 295 564
140) Uncountable nouns (webmaster) 295 430
141) Object pronouns (bridg) 294 492
142) Placement test 1 (anonyme) 292 536
143) Present simple (anonyme) 290 694
144) Passive form (anonyme) 289 956
145) Prefer/rather (bridg) 289 115
146) Can/Must/Should (laure95) 288 788
147) Past perfect (lili73) 287 218
148) Must or Have to? (woodyrun) 286 905
149) The/an/nothing (bridg) 284 966
150) To be (anonyme) 283 370
151) Can and can't (laure95) 280 443
152) Vocabulary: asking and answering (here4u) 280 426
153) Modal verbs (bridg) 277 107
154) Some / Any / no... (bridg) 270 206
155) Days of the week (bridg) 269 056
156) So / neither (anonyme) 264 235
157) Past simple (video) (anonyme) 263 527
158) Used to (bridg) 260 286
159) Should / must (anonyme) 259 356
160) Present continuous (chnawa) 259 324
161) Past tense (anonyme) 259 126
162) Vocabulary: on the phone (here4u) 258 707
163) Find out a quantity (webmaster) 258 459
164) Superlative + and adjective (anonyme) 257 013
165) Articles : a / an / the / Ø (anonyme) 255 981
166) Comparative and superlative (anonyme) 254 540
167) Numbers 1/100 (anonyme) 253 446
168) Modal can (video) (anonyme) 252 717
169) Relatives pronouns (who, which, that...) (anonyme) 247 808
170) Comparatives (anonyme) 246 463
171) Vocabulary: at the restaurant (here4u) 245 638
172) A few, a little, few, little (anonyme) 245 003
173) Would rather / would prefer to (anonyme) 244 141
174) Present continuous and the Going to form (anonyme) 242 364
175) Have something done (anonyme) 239 678
176) Should/ have to/ must (anonyme) 239 633
177) The past (webmaster) 237 710
178) Future continuous and future perfect. (felin) 237 440
179) Used to/would (woodyrun) 237 310
180) How to ask a question in English (bridg) 235 115
181) I wish, if only (felin) 233 945
182) Pluperfect (webmaster) 233 712
183) Countable or Uncountable? (webmaster) 232 992
184) Some / any (younes91) 232 220
185) Should / shouldn't (anonyme) 231 207
186) Present simple or continuous (bridg) 230 768
187) Adjectives - ing and ed (felin) 228 688
188) Hypothesis (webmaster) 227 919
189) Auxiliary BE (anonyme) 226 278
190) Articles a/an/the/0 (bridg) 226 114
191) Article The or nothing (anonyme) 225 780
192) Present perfect with Ever - never - (anonyme) 225 354
193) Present continuous OR Present simple? (bridg) 225 239
194) Must or mustn't (laure95) 224 978
195) Simple Preterite OR Preterite (BE+ing) (webmaster) 222 673
196) To / in order to / so as to / so that (irish21) 219 712
197) Present perfect (bridg) 219 342
198) Comparison (komiks) 217 561
199) What time is it ? (anonyme) 217 546
200) Indirect speech (bridg) 216 158
